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* Merge tag 'for-linus-20180929' of git://git.kernel.dk/linux-blockGreg Kroah-Hartman2018-09-295-7/+18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jens writes: "Block fixes for 4.19-rc6 A set of fixes that should go into this release. This pull request contains: - A fix (hopefully) for the persistent grants for xen-blkfront. A previous fix from this series wasn't complete, hence reverted, and this one should hopefully be it. (Boris Ostrovsky) - Fix for an elevator drain warning with SMR devices, which is triggered when you switch schedulers (Damien) - bcache deadlock fix (Guoju Fang) - Fix for the block unplug tracepoint, which has had the timer/explicit flag reverted since 4.11 (Ilya) - Fix a regression in this series where the blk-mq timeout hook is invoked with the RCU read lock held, hence preventing it from blocking (Keith) - NVMe pull from Christoph, with a single multipath fix (Susobhan Dey)" * tag 'for-linus-20180929' of git://git.kernel.dk/linux-block: xen/blkfront: correct purging of persistent grants Revert "xen/blkfront: When purging persistent grants, keep them in the buffer" blk-mq: I/O and timer unplugs are inverted in blktrace bcache: add separate workqueue for journal_write to avoid deadlock xen/blkfront: When purging persistent grants, keep them in the buffer block: fix deadline elevator drain for zoned block devices blk-mq: Allow blocking queue tag iter callbacks nvme: properly propagate errors in nvme_mpath_init
| * Merge branch 'nvme-4.19' of git://git.infradead.org/nvme into for-linusJens Axboe2018-09-281-2/+4
| |\ | | | | | | | | | | | | | | | | | | Pull NVMe fix from Christoph. * 'nvme-4.19' of git://git.infradead.org/nvme: nvme: properly propagate errors in nvme_mpath_init
| | * nvme: properly propagate errors in nvme_mpath_initSusobhan Dey2018-09-261-2/+4
| | | | | | | | | | | | | | | Signed-off-by: Susobhan Dey <susobhan.dey@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
| * | xen/blkfront: correct purging of persistent grantsJuergen Gross2018-09-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a46b53672b2c2e3770b38a4abf90d16364d2584b ("xen/blkfront: cleanup stale persistent grants") introduced a regression as purged persistent grants were not pu into the list of free grants again. Correct that. Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | Revert "xen/blkfront: When purging persistent grants, keep them in the buffer"Jens Axboe2018-09-281-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fix didn't work for all cases, reverting to add a (hopefully) better fix. This reverts commit f151ba989d149bbdfc90e5405724bbea094f9b17. Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | bcache: add separate workqueue for journal_write to avoid deadlockGuoju Fang2018-09-273-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After write SSD completed, bcache schedules journal_write work to system_wq, which is a public workqueue in system, without WQ_MEM_RECLAIM flag. system_wq is also a bound wq, and there may be no idle kworker on current processor. Creating a new kworker may unfortunately need to reclaim memory first, by shrinking cache and slab used by vfs, which depends on bcache device. That's a deadlock. This patch create a new workqueue for journal_write with WQ_MEM_RECLAIM flag. It's rescuer thread will work to avoid the deadlock. Signed-off-by: Guoju Fang <fangguoju@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | xen/blkfront: When purging persistent grants, keep them in the bufferBoris Ostrovsky2018-09-271-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a46b53672b2c ("xen/blkfront: cleanup stale persistent grants") added support for purging persistent grants when they are not in use. As part of the purge, the grants were removed from the grant buffer, This eventually causes the buffer to become empty, with BUG_ON triggered in get_free_grant(). This can be observed even on an idle system, within 20-30 minutes. We should keep the grants in the buffer when purging, and only free the grant ref. Fixes: a46b53672b2c ("xen/blkfront: cleanup stale persistent grants") Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | | Merge branch 'timers-urgent-for-linus' of ↵Greg Kroah-Hartman2018-09-293-13/+28
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Thomas writes: "Three small fixes for clocksource drivers: - Proper error handling in the Atmel PIT driver - Add CLOCK_SOURCE_SUSPEND_NONSTOP for TI SoCs so suspend works again - Fix the next event function for Facebook Backpack-CMM BMC chips so usleep(100) doesnt sleep several milliseconds" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/timer-atmel-pit: Properly handle error cases clocksource/drivers/fttmr010: Fix set_next_event handler clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for non-am43 SoCs
| * \ \ Merge branch 'clockevents/4.19-fixes' of ↵Thomas Gleixner2018-09-271-6/+14
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.linaro.org/people/daniel.lezcano/linux into timers/urgent Pull another fix from Daniel Lezcano, which felt through the cracks: - Fix a potential memory leak reported by smatch in the atmel timer driver
| | * | | clocksource/drivers/timer-atmel-pit: Properly handle error casesAlexandre Belloni2018-09-271-6/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The smatch utility reports a possible leak: smatch warnings: drivers/clocksource/timer-atmel-pit.c:183 at91sam926x_pit_dt_init() warn: possible memory leak of 'data' Ensure data is freed before exiting with an error. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: stable@vger.kernel.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| * | | | Merge branch 'clockevents/4.19-fixes' of ↵Thomas Gleixner2018-09-242-7/+14
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.linaro.org/people/daniel.lezcano/linux into timers/urgent Pull clockevent fixed from Daniel Lezcano: - Add the CLOCK_SOURCE_SUSPEND_NONSTOP for non-am43 SoCs (Keerthy) - Fix set_next_event handler for the fttmr010 (Tao Ren)
| | * | | clocksource/drivers/fttmr010: Fix set_next_event handlerTao Ren2018-09-241-7/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the aspeed MATCH1 register is updated to <current_count - cycles> in set_next_event handler, with the assumption that COUNT register value is preserved when the timer is disabled and it continues decrementing after the timer is enabled. But the assumption is wrong: RELOAD register is loaded into COUNT register when the aspeed timer is enabled, which means the next event may be delayed because timer interrupt won't be generated until <0xFFFFFFFF - current_count + cycles>. The problem can be fixed by updating RELOAD register to <cycles>, and COUNT register will be re-loaded when the timer is enabled and interrupt is generated when COUNT register overflows. The test result on Facebook Backpack-CMM BMC hardware (AST2500) shows the issue is fixed: without the patch, usleep(100) suspends the process for several milliseconds (and sometimes even over 40 milliseconds); after applying the fix, usleep(100) takes averagely 240 microseconds to return under the same workload level. Signed-off-by: Tao Ren <taoren@fb.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Lei YU <mine260309@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
| | * | | clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for ↵Keerthy2018-09-131-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | non-am43 SoCs The 32k clocksource is NONSTOP for non-am43 SoCs. Hence add the flag for all the other SoCs. Reported-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* | | | | Merge tag 'pm-4.19-rc6' of ↵Greg Kroah-Hartman2018-09-291-2/+2
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Rafael writes: "Power management fix for 4.19-rc6 Fix incorrect __init and __exit annotations in the Qualcomm Kryo cpufreq driver (Nathan Chancellor)." * tag 'pm-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: qcom-kryo: Fix section annotations
| * | | | | cpufreq: qcom-kryo: Fix section annotationsNathan Chancellor2018-09-291-2/+2
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is currently a warning when building the Kryo cpufreq driver into the kernel image: WARNING: vmlinux.o(.text+0x8aa424): Section mismatch in reference from the function qcom_cpufreq_kryo_probe() to the function .init.text:qcom_cpufreq_kryo_get_msm_id() The function qcom_cpufreq_kryo_probe() references the function __init qcom_cpufreq_kryo_get_msm_id(). This is often because qcom_cpufreq_kryo_probe lacks a __init annotation or the annotation of qcom_cpufreq_kryo_get_msm_id is wrong. Remove the '__init' annotation from qcom_cpufreq_kryo_get_msm_id so that there is no more mismatch warning. Additionally, Nick noticed that the remove function was marked as '__init' when it should really be marked as '__exit'. Fixes: 46e2856b8e18 (cpufreq: Add Kryo CPU scaling driver) Fixes: 5ad7346b4ae2 (cpufreq: kryo: Add module remove and exit) Reported-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.18+ <stable@vger.kernel.org> # 4.18+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | | | Merge branch 'for-linus' of ↵Greg Kroah-Hartman2018-09-294-47/+37
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Dmitry writes: "Input updates for v4.19-rc5 Just a few driver fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: uinput - allow for max == min during input_absinfo validation Input: elantech - enable middle button of touchpad on ThinkPad P72 Input: atakbd - fix Atari CapsLock behaviour Input: atakbd - fix Atari keymap Input: egalax_ts - add system wakeup support Input: gpio-keys - fix a documentation index issue
| * | | | | Input: uinput - allow for max == min during input_absinfo validationPeter Hutterer2018-09-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These values are inclusive, so a range of 1 requires min == max. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Martin Kepplinger <martin.kepplinger@ginzinger.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * | | | | Input: elantech - enable middle button of touchpad on ThinkPad P72Aaron Ma2018-09-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding 2 new touchpad IDs to support middle button support. Cc: stable@vger.kernel.org Signed-off-by: Aaron Ma <aaron.ma@canonical.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * | | | | Input: atakbd - fix Atari CapsLock behaviourMichael Schmitz2018-09-191-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CapsLock key on Atari keyboards is not a toggle, it does send the normal make and break scancodes. Drop the CapsLock toggle handling code, which did cause the CapsLock key to merely act as a Shift key. Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * | | | | Input: atakbd - fix Atari keymapAndreas Schwab2018-09-191-38/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix errors in Atari keymap (mostly in keypad, help and undo keys). Patch provided on debian-68k ML by Andreas Schwab <schwab@linux-m68k.org>, keymap array size and unhandled scancode limit adjusted to 0x73 by me. Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| * | | | | Input: egalax_ts - add system wakeup supportAnson Huang2018-09-191-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds wakeup function support for egalax touch screen, if "wakeup-source" is added to device tree's egalax touch screen node, the wakeup function will be enabled, and egalax touch screen will be able to wakeup system from suspend. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
* | | | | | Merge tag 'spi-fix-v4.19-rc5' of ↵Greg Kroah-Hartman2018-09-294-15/+82
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Mark writes: "spi: Fixes for v4.19 Quite a few fixes for the Renesas drivers in here, plus a fix for the Tegra driver and some documentation fixes for the recently added spi-mem code. The Tegra fix is relatively large but fairly straightforward and mechanical, it runs on probe so it's been reasonably well covered in -next testing." * tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header spi: spi-mem: Add missing description for data.nbytes field spi: rspi: Fix interrupted DMA transfers spi: rspi: Fix invalid SPI use during system suspend spi: sh-msiof: Fix handling of write value for SISTR register spi: sh-msiof: Fix invalid SPI use during system suspend spi: gpio: Fix copy-and-paste error spi: tegra20-slink: explicitly enable/disable clock
| * | | | | | spi: rspi: Fix interrupted DMA transfersGeert Uytterhoeven2018-09-051-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When interrupted, wait_event_interruptible_timeout() returns -ERESTARTSYS, and the SPI transfer in progress will fail, as expected: m25p80 spi0.0: SPI transfer failed: -512 spi_master spi0: failed to transfer one message from queue However, as the underlying DMA transfers may not have completed, all subsequent SPI transfers may start to fail: spi_master spi0: receive timeout qspi_transfer_out_in() returned -110 m25p80 spi0.0: SPI transfer failed: -110 spi_master spi0: failed to transfer one message from queue Fix this by calling dmaengine_terminate_all() not only for timeouts, but also for errors. This can be reproduced on r8a7991/koelsch, using "hd /dev/mtd0" followed by CTRL-C. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | spi: rspi: Fix invalid SPI use during system suspendGeert Uytterhoeven2018-09-051-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the SPI queue is running during system suspend, the system may lock up. Fix this by stopping/restarting the queue during system suspend/resume, by calling spi_master_suspend()/spi_master_resume() from the PM callbacks. In-kernel users will receive an -ESHUTDOWN error while system suspend/resume is in progress. Based on a patch for sh-msiof by Gaku Inami. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | spi: sh-msiof: Fix handling of write value for SISTR registerHiromitsu Yamasaki2018-09-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes writing to the SISTR register according to the H/W user's manual. The TDREQ bit and RDREQ bits of SISTR are read-only, and must be written their initial values of zero. Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> [geert: reword] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | spi: sh-msiof: Fix invalid SPI use during system suspendGaku Inami2018-09-051-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the SPI queue is running during system suspend, the system may lock up. Fix this by stopping/restarting the queue during system suspend/resume by calling spi_master_suspend()/spi_master_resume() from the PM callbacks. In-kernel users will receive an -ESHUTDOWN error while system suspend/resume is in progress. Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> [geert: Cleanup, reword] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | spi: gpio: Fix copy-and-paste errorLinus Walleij2018-09-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes an embarrassing copy-and-paste error in the errorpath of spi_gpio_request(): we were checking the wrong struct member for error code right after retrieveing the sck GPIO. Fixes: 9b00bc7b901ff672 ("spi: spi-gpio: Rewrite to use GPIO descriptors") Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | | | | | spi: tegra20-slink: explicitly enable/disable clockMarcel Ziswiler2018-09-031-8/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Depending on the SPI instance one may get an interrupt storm upon requesting resp. interrupt unless the clock is explicitly enabled beforehand. This has been observed trying to bring up instance 4 on T20. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
* | | | | | | Merge tag 'regulator-v4.19-rc5' of ↵Greg Kroah-Hartman2018-09-293-4/+21
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Mark writes: "regulator: Fixes for 4.19 A collection of fairly minor bug fixes here, a couple of driver specific ones plus two core fixes. There's one fix for the new suspend state code which fixes some confusion with constant values that are supposed to indicate noop operation and another fixing a race condition with the creation of sysfs files on new regulators." * tag 'regulator-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: fix crash caused by null driver data regulator: Fix 'do-nothing' value for regulators without suspend state regulator: da9063: fix DT probing with constraints regulator: bd71837: Disable voltage monitoring for LDO3/4
| * | | | | | | regulator: fix crash caused by null driver dataYu Zhao2018-09-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_set_drvdata() needs to be called before device_register() exposes device to userspace. Otherwise kernel crashes after it gets null pointer from dev_get_drvdata() when userspace tries to access sysfs entries. [Removed backtrace for length -- broonie] Signed-off-by: Yu Zhao <yuzhao@google.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | | regulator: Fix 'do-nothing' value for regulators without suspend stateMarek Szyprowski2018-09-032-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some regulators don't have all states defined and in such cases regulator core should not assume anything. However in current implementation of of_get_regulation_constraints() DO_NOTHING_IN_SUSPEND enable value was set only for regulators which had suspend node defined, otherwise the default 0 value was used, what means DISABLE_IN_SUSPEND. This lead to broken system suspend/resume on boards, which had simple regulator constraints definition (without suspend state nodes). To avoid further mismatches between the default and uninitialized values of the suspend enabled/disabled states, change the values of the them, so default '0' means DO_NOTHING_IN_SUSPEND. Fixes: 72069f9957a1: regulator: leave one item to record whether regulator is enabled Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
| * | | | | | | regulator: bd71837: Disable voltage monitoring for LDO3/4Matti Vaittinen2018-08-291-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a HW quirk in BD71837. The shutdown sequence timings for bucks/LDOs which are enabled via register interface are changed. At PMIC poweroff the voltage for BUCK6/7 is cut immediately at the beginning of shut-down sequence. This causes LDO5/6 voltage monitoring to detect under voltage and force PMIC to emergency state instead of poweroff. Disable voltage monitoring for LDO5 and LDO6 at probe to avoid this. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
* | | | | | | | Merge tag 'pinctrl-v4.19-4' of ↵Greg Kroah-Hartman2018-09-293-55/+43
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Linus writes: "Pin control fixes for v4.19: - Fixes to x86 hardware: - AMD interrupt debounce issues - Faulty Intel cannonlake register offset - Revert pin translation IRQ locking" * tag 'pinctrl-v4.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: Revert "pinctrl: intel: Do pin translation when lock IRQ" pinctrl: cannonlake: Fix HOSTSW_OWN register offset of H variant pinctrl/amd: poll InterruptEnable bits in amd_gpio_irq_set_type
| * | | | | | | | Revert "pinctrl: intel: Do pin translation when lock IRQ"Mika Westerberg2018-09-251-32/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 55aedef50d4d810670916d9fce4a40d5da2079e7. Commit 55aedef50d4d ("pinctrl: intel: Do pin translation when lock IRQ") added special translation from GPIO number to hardware pin number to irq_reqres/relres hooks to avoid failure when IRQs are requested. The actual failure happened inside gpiochip_lock_as_irq() because it calls gpiod_get_direction() and pinctrl-intel.c::intel_gpio_get_direction() implementation originally missed the translation so the two hooks made it work by skipping the ->get_direction() call entirely (it overwrote the default GPIOLIB provided functions). The proper fix that adds translation to GPIO callbacks was merged with commit 96147db1e1df ("pinctrl: intel: Do pin translation in other GPIO operations as well"). This allows us to use the default GPIOLIB provided functions again. In addition as find out by Benjamin Tissoires the two functions (intel_gpio_irq_reqres()/intel_gpio_irq_relres()) now cause problems of their own because they operate on pin numbers and pass that pin number to gpiochip_lock_as_irq() which actually expects a GPIO number. Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911 Fixes: 55aedef50d4d ("pinctrl: intel: Do pin translation when lock IRQ") Reported-and-tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | | | | | | | pinctrl: cannonlake: Fix HOSTSW_OWN register offset of H variantMika Westerberg2018-09-251-13/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out the HOSTSW_OWN register offset is different between LP and H variants. The latter should use 0xc0 instead so fix that. Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911 Fixes: a663ccf0fea1 ("pinctrl: intel: Add Intel Cannon Lake PCH-H pin controller support") Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | | | | | | | pinctrl/amd: poll InterruptEnable bits in amd_gpio_irq_set_typeDaniel Kurtz2018-09-251-10/+23
| | |_|_|/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From the AMD BKDG, if WAKE_INT_MASTER_REG.MaskStsEn is set, a software write to the debounce registers of *any* gpio will block wake/interrupt status generation for *all* gpios for a length of time that depends on WAKE_INT_MASTER_REG.MaskStsLength[11:0]. During this period the Interrupt Delivery bit (INTERRUPT_ENABLE) will read as 0. In commit 4c1de0414a1340 ("pinctrl/amd: poll InterruptEnable bits in enable_irq") we tried to fix this same "gpio Interrupts are blocked immediately after writing debounce registers" problem, but incorrectly assumed it only affected the gpio whose debounce was being configured and not ALL gpios. To solve this for all gpios, we move the polling loop from amd_gpio_irq_enable() to amd_gpio_irq_set_type(), while holding the gpio spinlock. This ensures that another gpio operation (e.g. amd_gpio_irq_unmask()) can read a temporarily disabled IRQ and incorrectly disable it while trying to modify some other register bits. Fixes: 4c1de0414a1340 pinctrl/amd: poll InterruptEnable bits in enable_irq Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | | | | | | Merge tag 'drm-fixes-2018-09-28' of git://anongit.freedesktop.org/drm/drmGreg Kroah-Hartman2018-09-2816-51/+217
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dave writes: "drm fixes for 4.19-rc6 Looks like a pretty normal week for graphics, core: syncobj fix, panel link regression revert amd: suspend/resume fixes, EDID emulation fix mali-dp: NV12 writeback and vblank reset fixes etnaviv: DMA setup fix" * tag 'drm-fixes-2018-09-28' of git://anongit.freedesktop.org/drm/drm: drm/amd/display: Fix Edid emulation for linux drm/amd/display: Fix Vega10 lightup on S3 resume drm/amdgpu: Fix vce work queue was not cancelled when suspend Revert "drm/panel: Add device_link from panel device to DRM device" drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is set drm/malidp: Fix writeback in NV12 drm: mali-dp: Call drm_crtc_vblank_reset on device init drm/etnaviv: add DMA configuration for etnaviv platform device
| * \ \ \ \ \ \ \ Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie2018-09-288-28/+142
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into drm-fixes Just a few fixes for 4.19: - Couple of suspend/resume fixes - Fix EDID emulation with DC Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180927155418.2813-1-alexander.deucher@amd.com
| | * | | | | | | | drm/amd/display: Fix Edid emulation for linuxBhawanpreet Lakha2018-09-273-7/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [Why] EDID emulation didn't work properly for linux, as we stop programming if nothing is connected physically. [How] We get a flag from DRM when we want to do edid emulation. We check if this flag is true and nothing is connected physically, if so we only program the front end using VIRTUAL_SIGNAL. Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| | * | | | | | | | drm/amd/display: Fix Vega10 lightup on S3 resumeRoman Li2018-09-273-18/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [Why] There have been a few reports of Vega10 display remaining blank after S3 resume. The regression is caused by workaround for mode change on Vega10 - skip set_bandwidth if stream count is 0. As a result we skipped dispclk reset on suspend, thus on resume we may skip the clock update assuming it hasn't been changed. On some systems it causes display blank or 'out of range'. [How] Revert "drm/amd/display: Fix Vega10 black screen after mode change" Verified that it hadn't cause mode change regression. Signed-off-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| | * | | | | | | | drm/amdgpu: Fix vce work queue was not cancelled when suspendRex Zhu2018-09-272-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vce cancel_delayed_work_sync never be called. driver call the function in error path. This caused the A+A suspend hang when runtime pm enebled. As we will visit the smu in the idle queue. this will cause smu hang because the dgpu has been suspend, and the dgpu also will be waked up. As the smu has been hang, so the dgpu resume will failed. Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
| * | | | | | | | | Merge tag 'drm-misc-fixes-2018-09-27-1' of ↵Dave Airlie2018-09-282-10/+5
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://anongit.freedesktop.org/drm/drm-misc into drm-fixes - Revert adding device-link to panels - Don't leak fences in drm/syncobj Signed-off-by: Dave Airlie <airlied@redhat.com> From: Sean Paul <sean@poorly.run> Link: https://patchwork.freedesktop.org/patch/msgid/20180927152712.GA53076@art_vandelay
| | * | | | | | | | | Revert "drm/panel: Add device_link from panel device to DRM device"Linus Walleij2018-09-271-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 0c08754b59da5557532d946599854e6df28edc22. commit 0c08754b59da ("drm/panel: Add device_link from panel device to DRM device") creates a circular dependency under these circumstances: 1. The panel depends on dsi-host because it is MIPI-DSI child device. 2. dsi-host depends on the drm parent device (connector->dev->dev) this should be allowed. 3. drm parent dev (connector->dev->dev) depends on the panel after this patch. This makes the dependency circular and while it appears it does not affect any in-tree drivers (they do not seem to have dsi hosts depending on the same parent device) this does not seem right. As noted in a response from Andrzej Hajda, the intent is likely to make the panel dependent on the DRM device (connector->dev) not its parent. But we have no way of doing that since the DRM device doesn't contain any struct device on its own (arguably it should). Revert this until a proper approach is figured out. Cc: Jyri Sarha <jsarha@ti.com> Cc: Eric Anholt <eric@anholt.net> Cc: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180927124130.9102-1-linus.walleij@linaro.org
| | * | | | | | | | | drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is setJason Ekstrand2018-09-261-0/+5
| | | |/ / / / / / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We attempt to get fences earlier in the hopes that everything will already have fences and no callbacks will be needed. If we do succeed in getting a fence, getting one a second time will result in a duplicate ref with no unref. This is causing memory leaks in Vulkan applications that create a lot of fences; playing for a few hours can, apparently, bring down the system. Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107899 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180926071703.15257-1-jason.ekstrand@intel.com
| * | | | | | | | | Merge branch 'for-upstream/malidp-fixes' of git://linux-arm.org/linux-ld ↵Dave Airlie2018-09-275-7/+49
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into drm-fixes Fix NV12 writeback and fix vblank reset. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Liviu Dudau <Liviu.Dudau@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180921112354.GR936@e110455-lin.cambridge.arm.com
| | * | | | | | | | | drm/malidp: Fix writeback in NV12Alexandru Gheorghe2018-09-214-7/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we want to writeback to memory in NV12 format we need to program the RGB2YUV coefficients. Currently, we don't program the coefficients and NV12 doesn't work at all. This patchset fixes that by programming a sane default(bt709, limited range) as rgb2yuv coefficients. In the long run, probably we need to think of a way for userspace to be able to program that, but for now I think this is better than not working at all or not advertising NV12 as a supported format for memwrite. Changes since v1: - Write the rgb2yuv coefficients only once, since we don't change them at all, just write them the first time NV12 is programmed, suggested by Brian Starkey, here [1] [1] https://lists.freedesktop.org/archives/dri-devel/2018-August/186819.html Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
| | * | | | | | | | | drm: mali-dp: Call drm_crtc_vblank_reset on device initAlexandru Gheorghe2018-09-211-0/+1
| | | |/ / / / / / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, if userspace calls drm_wait_vblank before the crtc is activated the crtc vblank_enable hook is called, which in case of malidp driver triggers some warninngs. This happens because on device init we don't inform the drm core about the vblank state by calling drm_crtc_vblank_on/off/reset which together with drm_vblank_get have some magic that prevents calling drm_vblank_enable when crtc is off. Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
| * | | | | | | | | Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux ↵Dave Airlie2018-09-271-6/+21
| |\ \ \ \ \ \ \ \ \ | | |_|/ / / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into drm-fixes one fix to get a proper DMA configuration in place for the etnaviv virtual device. I'm sending this as a fix, as a dma-mapping change at the ARC architecture side during the 4.19 cycle broke etnaviv on this platform, which gets remedied with this patch, but it also enables ARM64. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Lucas Stach <l.stach@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/ea1f712bf09bf9439c6b092bf2c2bde7bb01cf5e.camel@pengutronix.de
| | * | | | | | | | drm/etnaviv: add DMA configuration for etnaviv platform deviceLucas Stach2018-09-141-6/+21
| | | |/ / / / / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The etnaviv device is a virtual device backing the DRM device, which may drive multiple hardware GPU core devices. As most of the dma-mapping handling is done through the virtual device, we need to make sure that a proper DMA setup is in place. The easiest way to get a reasonable configuration is to let the virtual device share the DMA configuration with one of the GPU devices, so call of_dma_configure() with the right parameters manually. This assumes that all etnaviv driven GPU devices in the system share the same DMA configuration. If we ever encounter a SoC where the GPUs are on busses with different offsets or behind different IOMMUs that will require much deeper changes to the driver, as we would need to implement etnaviv specific versions of most of the DRM helper functions. For now we should be fine with this solution. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Tested-by: Guido Günther <agx@sigxcpu.org> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
* | | | | | | | | Merge tag 'pci-v4.19-fixes-2' of ↵Greg Kroah-Hartman2018-09-283-11/+11
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Bjorn writes: "PCI fixes: - Fix ACPI hotplug issue that causes black screen crash at boot (Mika Westerberg) - Fix DesignWare "scheduling while atomic" issues (Jisheng Zhang) - Add PPC contacts to MAINTAINERS for PCI core error handling (Bjorn Helgaas) - Sort Mobiveil MAINTAINERS entry (Lorenzo Pieralisi)" * tag 'pci-v4.19-fixes-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: ACPI / hotplug / PCI: Don't scan for non-hotplug bridges if slot is not bridge PCI: dwc: Fix scheduling while atomic issues MAINTAINERS: Move mobiveil PCI driver entry where it belongs MAINTAINERS: Update PPC contacts for PCI core error handling