| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata updates from Tejun Heo:
"Nothing too interesting.
The biggest change is refcnting fix for ata_host - the bug is recent
and can only be triggered on controller hotplug, so very few are
hitting it.
There also are a number of trivial license / error message changes and
some hardware specific changes"
* 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (23 commits)
ahci: imx: add the imx8qm ahci sata support
libata: ensure host is free'd on error exit paths
ata: ahci-platform: add reset control support
ahci: imx: fix the build warning
ata: add Amiga Gayle PATA controller driver
ahci: imx: add the imx6qp ahci sata support
ata: change Tegra124 to Tegra
ata: ahci_tegra: Add AHCI support for Tegra210
ata: ahci_tegra: disable DIPM
ata: ahci_tegra: disable devslp for Tegra124
ata: ahci_tegra: initialize regulators from soc struct
ata: ahci_tegra: Update initialization sequence
dt-bindings: Tegra210: add binding documentation
libata: add refcounting to ata_host
pata_bk3710: clarify license version and use SPDX header
pata_falcon: clarify license version and use SPDX header
pata_it821x: Delete an error message for a failed memory allocation in it821x_firmware_command()
pata_macio: Delete an error message for a failed memory allocation in two functions
pata_mpc52xx: Delete an error message for a failed memory allocation in mpc52xx_ata_probe()
sata_dwc_460ex: Delete an error message for a failed memory allocation in sata_dwc_port_start()
...
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- There are three PHY lanes on iMX8QM, and can be
used in the following three cases
1. a two lanes PCIE_A, and a single lane SATA.
2. a single lane PCIE_A, a single lane PCIE_B
and a single lane SATA.
3. a two lanes PCIE_A, and a single lane PCIE_B.
The configuration of the iMX8QM AHCI SATA is relied
on the usage of PCIE ports in the case 1 and 2.
Use standalone iMX8 AHCI SATA probe and enable
functions to enable iMX8QM AHCI SATA support.
- To save power consumption, PHY CLKs can be gated
off after the configurations are done.
- The impedance ratio should be configured refer to
differnet REXT values.
0x6c <--> REXT value is 85Ohms
0x80 (default value) <--> REXT value is 100Ohms.
In general, REXT value should be 85ohms in standalone
PCIE HW board design, and 100ohms in SATA standalone
HW board design.
When the PCIE and the SATA are enabled simultaneously
in the HW board design. The REXT value would be set
to 85ohms.
Configure the SATA PHY impedance ratio to 0x6c in
default.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The host structure is not being kfree'd on two error exit paths
leading to memory leaks. Add in new err_free label and kfree host.
Detected by CoverityScan, CID#1466103 ("Resource leak")
Fixes: 2623c7a5f279 ("libata: add refcounting to ata_host")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add support to get and control a list of resets for the device
as optional and shared. These resets must be kept de-asserted until
the device is enabled.
This is specified as shared because some SoCs like UniPhier series
have common reset controls with all ahci controller instances.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add the default as the last entry to fix the following
build warning introduced by commit.
e5878732a521 ("ahci: imx: add the imx6qp ahci sata support")
drivers/ata/ahci_imx.c: In function 'imx_sata_disable':
drivers/ata/ahci_imx.c:478:2: warning: enumeration value 'AHCI_IMX53'
not handled in switch [-Wswitch]
switch (imxpriv->type) {
^~~~~~
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add Amiga Gayle PATA controller driver. It enables libata support
for the on-board IDE interfaces on some Amiga models (A600, A1200,
A4000 and A4000T) and also for IDE interfaces on the Zorro expansion
bus (M-Tech E-Matrix 530 expansion card).
Thanks to John Paul Adrian Glaubitz and Michael Schmitz for help
with testing the driver.
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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- Regarding to imx6q ahci sata, imx6qp ahci sata
has the reset mechanism. Add the imx6qp ahci sata
support in this commit.
- Use the specific reset callback for imx53 sata,
and use the default ahci_ops.softreset for the others.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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ahci_tegra driver now supports Tegra124, Tegra132 and Tegra210,
so change Tegra124 to Tegra.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add support for the AHCI-compliant Serial ATA host controller on the
Tegra210 system-on-chip.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Tegra does not support DIPM and it should be disabled.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Tegra124 does not support devslp and it should be disabled.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Get the regulator names to be initialized from soc structure
and initialize them.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Update the controller initialization sequence and move Tegra124
specifics to tegra124_ahci_init.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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After commit 9a6d6a2ddabb ("ata: make ata port as parent device of scsi
host") manual driver unbind/remove causes use-after-free.
Unbind unconditionally invokes devres_release_all() which calls
ata_host_release() and frees ata_host/ata_port memory while it is still
being referenced as a parent of SCSI host. When SCSI host is finally
released scsi_host_dev_release() calls put_device(parent) and accesses
freed ata_port memory.
Add reference counting to make sure that ata_host lives long enough.
Bug report: https://lkml.org/lkml/2017/11/1/945
Fixes: 9a6d6a2ddabb ("ata: make ata port as parent device of scsi host")
Cc: Tejun Heo <tj@kernel.org>
Cc: Lin Ming <minggr@gmail.com>
Cc: linux-ide@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Taras Kondratiuk <takondra@cisco.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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- clarify license version (it should be GPL 2.0)
- use SPDX header
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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- clarify license version (it should be GPL 2.0)
- use SPDX header
Cc: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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it821x_firmware_command()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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functions
Omit an extra message for a memory allocation failure in these functions.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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mpc52xx_ata_probe()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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sata_dwc_port_start()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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pata_s3c_probe()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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arasan_cf_probe()
The local variable "ret" will eventually be set to an appropriate value
a bit later. Thus omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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arasan_cf_probe()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"New LED class driver:
- add driver for Mellanox regmap LEDs
Improvement to ledtrig-disk:
- extend disk trigger for reads and writes
Improvements and fixes to existing LED class drivers:
- add more product/board names for PC Engines APU2
- fix wrong dmi_match on PC Engines APU LEDs
- clarify chips supported by LM355x driver
- fix Kconfig text for MLXCPLD, SYSCON, MC13783, NETXBIG
- allow leds-mlxcpld compilation for 32 bit arch"
* tag 'leds_for_4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: Fix wrong dmi_match on PC Engines APU LEDs
leds: Extends disk trigger for reads and writes
leds: Add more product/board names for PC Engines APU2
leds: add driver for support Mellanox regmap LEDs for BMC and x86 platform
leds: fix Kconfig text for MLXCPLD, SYSCON, MC13783, NETXBIG
leds: Clarify supported chips by LM355x driver
leds: leds-mlxcpld: Allow compilation for 32 bit arch
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This adds two new disk triggers for triggering on reads
and writes respectively, named "disk-read" and "disk-write".
The use case comes from working on the D-Link DNS-313 NAS
box. This features an RGB LED for disk activity. with
these two triggers I can couple the green LED to read
activity and the red LED to write activity, which gives
the appropriate user feedback about what is happening
on the disk. When tested it gave exactly the feedback
desired.
The in-kernel interface is simply changed to pass a bool
indicating if the activity is write activity and update
each trigger (and the composite "disk-activity" trigger)
depending on what is passed in.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pul removal of obsolete architecture ports from Arnd Bergmann:
"This removes the entire architecture code for blackfin, cris, frv,
m32r, metag, mn10300, score, and tile, including the associated device
drivers.
I have been working with the (former) maintainers for each one to
ensure that my interpretation was right and the code is definitely
unused in mainline kernels. Many had fond memories of working on the
respective ports to start with and getting them included in upstream,
but also saw no point in keeping the port alive without any users.
In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company in
charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
seems that all the SoC product lines are still around, but have not
used the custom CPU architectures for several years at this point. In
contrast, CPU instruction sets that remain popular and have actively
maintained kernel ports tend to all be used across multiple licensees.
[ See the new nds32 port merged in the previous commit for the next
generation of "one company in charge of an SoC line, a CPU
microarchitecture and a software ecosystem" - Linus ]
The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I
made sure that they are all unused. Some architectures (notably tile,
mn10300, and blackfin) are still being shipped in products with old
kernels, but those products will never be updated to newer kernel
releases.
After this series, we still have a few architectures without mainline
gcc support:
- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.
- openrisc, risc-v and nds32 are still in the process of finishing
their support or getting it added to mainline gcc in the first
place. They all have patched gcc-7.3 ports that work to some
degree, but complete upstream support won't happen before gcc-8.1.
Csky posted their first kernel patch set last week, their situation
will be similar
[ Palmer Dabbelt points out that RISC-V support is in mainline gcc
since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]"
This really says it all:
2498 files changed, 95 insertions(+), 467668 deletions(-)
* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
MAINTAINERS: UNICORE32: Change email account
staging: iio: remove iio-trig-bfin-timer driver
tty: hvc: remove tile driver
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
serial: remove tile uart driver
serial: remove m32r_sio driver
serial: remove blackfin drivers
serial: remove cris/etrax uart drivers
usb: Remove Blackfin references in USB support
usb: isp1362: remove blackfin arch glue
usb: musb: remove blackfin port
usb: host: remove tilegx platform glue
pwm: remove pwm-bfin driver
i2c: remove bfin-twi driver
spi: remove blackfin related host drivers
watchdog: remove bfin_wdt driver
can: remove bfin_can driver
mmc: remove bfin_sdh driver
input: misc: remove blackfin rotary driver
input: keyboard: remove bf54x driver
...
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The blackfin architecture is getting removed, so this driver
is obsolete as well.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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When commit 9c7be59fc519af ("libata: Apply NOLPM quirk to Crucial MX100
512GB SSDs") was added it inherited the ATA_HORKAGE_NO_NCQ_TRIM quirk
from the existing "Crucial_CT*MX100*" entry, but that entry sets model_rev
to "MU01", where as the entry adding the NOLPM quirk sets it to NULL.
This means that after this commit we no apply the NO_NCQ_TRIM quirk to
all "Crucial_CT512MX100*" SSDs even if they have the fixed "MU02"
firmware. This commit splits the "Crucial_CT512MX100*" quirk into 2
quirks, one for the "MU01" firmware and one for all other firmware
versions, so that we once again only apply the NO_NCQ_TRIM quirk to the
"MU01" firmware version.
Fixes: 9c7be59fc519af ("libata: Apply NOLPM quirk to ... MX100 512GB SSDs")
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Commit b17e5729a630 ("libata: disable LPM for Crucial BX100 SSD 500GB
drive"), introduced a ATA_HORKAGE_NOLPM quirk for Crucial BX100 500GB SSDs
but limited this to the MU02 firmware version, according to:
http://www.crucial.com/usa/en/support-ssd-firmware
MU02 is the last version, so there are no newer possibly fixed versions
and if the MU02 version has broken LPM then the MU01 almost certainly
also has broken LPM, so this commit changes the quirk to apply to all
firmware versions.
Fixes: b17e5729a630 ("libata: disable LPM for Crucial BX100 SSD 500GB...")
Cc: stable@vger.kernel.org
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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There have been reports of the Crucial M500 480GB model not working
with LPM set to min_power / med_power_with_dipm level.
It has not been tested with medium_power, but that typically has no
measurable power-savings.
Note the reporters Crucial_CT480M500SSD3 has a firmware version of MU03
and there is a MU05 update available, but that update does not mention any
LPM fixes in its changelog, so the quirk matches all firmware versions.
In my experience the LPM problems with (older) Crucial SSDs seem to be
limited to higher capacity versions of the SSDs (different firmware?),
so this commit adds a NOLPM quirk for the 480 and 960GB versions of the
M500, to avoid LPM causing issues with these SSDs.
Cc: stable@vger.kernel.org
Reported-and-tested-by: Martin Steigerwald <martin@lichtvoll.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Samsung explicitly states that queued TRIM is supported for Linux with
860 PRO and 860 EVO.
Make the previous blacklist to cover only 840 and 850 series.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
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Like the Highpoint Rocketraid 642L and cards using a Marvel 88SE9235
controller in general, this RAID card also supports AHCI mode and short
of a custom driver, this is the only way to make it work under Linux.
Note that even though the card is called to 644L, it has a product-id
of 0x0645.
Cc: stable@vger.kernel.org
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1534106
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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We've got a kernel panic when using sata disk with sas controller:
[115946.152283] Unable to handle kernel NULL pointer dereference at virtual address 000007d8
[115946.223963] CPU: 0 PID: 22175 Comm: kworker/0:1 Tainted: G W OEL 4.14.0 #1
[115946.232925] Workqueue: events ata_scsi_hotplug
[115946.237938] task: ffff8021ee50b180 task.stack: ffff00000d5d0000
[115946.244717] PC is at sas_find_dev_by_rphy+0x44/0x114
[115946.250224] LR is at sas_find_dev_by_rphy+0x3c/0x114
......
[115946.355701] Process kworker/0:1 (pid: 22175, stack limit = 0xffff00000d5d0000)
[115946.363369] Call trace:
[115946.456356] [<ffff000008878a9c>] sas_find_dev_by_rphy+0x44/0x114
[115946.462908] [<ffff000008878b8c>] sas_target_alloc+0x20/0x5c
[115946.469408] [<ffff00000885a31c>] scsi_alloc_target+0x250/0x308
[115946.475781] [<ffff00000885ba30>] __scsi_add_device+0xb0/0x154
[115946.481991] [<ffff0000088b520c>] ata_scsi_scan_host+0x180/0x218
[115946.488367] [<ffff0000088b53d8>] ata_scsi_hotplug+0xb0/0xcc
[115946.494801] [<ffff0000080ebd70>] process_one_work+0x144/0x390
[115946.501115] [<ffff0000080ec100>] worker_thread+0x144/0x418
[115946.507093] [<ffff0000080f2c98>] kthread+0x10c/0x138
[115946.512792] [<ffff0000080855dc>] ret_from_fork+0x10/0x18
We found that Ding Xiang has reported a similar bug before:
https://patchwork.kernel.org/patch/9179817/
And this bug still exists in mainline. Since libsas handles hotplug and
device adding/removing itself, do not need to schedule ata hot plug task
here if it is a sas host.
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Cc: Ding Xiang <dingxiang@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
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After Laptop Mode Tools starts to use min_power for LPM, a user found
out Crucial BX100 SSD can't get mounted.
Crucial BX100 SSD 500GB drive don't work well with min_power. This also
happens to med_power_with_dipm.
So let's disable LPM for Crucial BX100 SSD 500GB drive.
BugLink: https://bugs.launchpad.net/bugs/1726930
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
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Various people have reported the Crucial MX100 512GB model not working
with LPM set to min_power. I've now received a report that it also does
not work with the new med_power_with_dipm level.
It does work with medium_power, but that has no measurable power-savings
and given the amount of people being bitten by the other levels not
working, this commit just disables LPM altogether.
Note all reporters of this have either the 512GB model (max capacity), or
are not specifying their SSD's size. So for now this quirk assumes this is
a problem with the 512GB model only.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=89261
Buglink: https://github.com/linrunner/TLP/issues/84
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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drivers/ata/sata_rcar.c: In function 'sata_rcar_init_controller':
drivers/ata/sata_rcar.c:821:8: warning: unused variable 'base' [-Wunused-variable]
Fixes: da77d76b95a0e894 ("sata_rcar: Reset SATA PHY when Salvator-X board resumes")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Because power of Salvator-X board is cut off in suspend,
it needs to reset SATA PHY state in resume.
Otherwise, SATA partition could not be accessed anymore.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com>
Signed-off-by: Hien Dang <hien.dang.eb@rvc.renesas.com>
[reinit phy in sata_rcar_resume() function on R-Car Gen3 only]
[factor out SATA module init sequence]
[fixed the prefix for the subject]
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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syzkaller hit a WARN() in ata_bmdma_qc_issue() when writing to /dev/sg0.
This happened because it issued an ATA pass-through command (ATA_16)
where the protocol field indicated that NCQ should be used -- but the
device did not support NCQ.
We could just remove the WARN() from libata-sff.c, but the real problem
seems to be that the SCSI -> ATA translation code passes through NCQ
commands without verifying that the device actually supports NCQ.
Fix this by adding the appropriate check to ata_scsi_pass_thru().
Here's reproducer that works in QEMU when /dev/sg0 refers to a disk of
the default type ("82371SB PIIX3 IDE"):
#include <fcntl.h>
#include <unistd.h>
int main()
{
char buf[53] = { 0 };
buf[36] = 0x85; /* ATA_16 */
buf[37] = (12 << 1); /* FPDMA */
buf[38] = 0x1; /* Has data */
buf[51] = 0xC8; /* ATA_CMD_READ */
write(open("/dev/sg0", O_RDWR), buf, sizeof(buf));
}
Fixes: ee7fb331c3ac ("libata: add support for NCQ commands for SG interface")
Reported-by: syzbot+2f69ca28df61bdfc77cd36af2e789850355a221e@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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syzkaller hit a WARN() in ata_qc_issue() when writing to /dev/sg0. This
happened because it issued a READ_6 command with no data buffer.
Just remove the WARN(), as it doesn't appear indicate a kernel bug. The
expected behavior is to fail the command, which the code does.
Here's a reproducer that works in QEMU when /dev/sg0 refers to a disk of
the default type ("82371SB PIIX3 IDE"):
#include <fcntl.h>
#include <unistd.h>
int main()
{
char buf[42] = { [36] = 0x8 /* READ_6 */ };
write(open("/dev/sg0", O_RDWR), buf, sizeof(buf));
}
Fixes: f92a26365a72 ("libata: change ATA_QCFLAG_DMAMAP semantics")
Reported-by: syzbot+f7b556d1766502a69d85071d2ff08bd87be53d0f@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org> # v2.6.25+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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syzkaller reported a crash in ata_bmdma_fill_sg() when writing to
/dev/sg1. The immediate cause was that the ATA command's scatterlist
was not DMA-mapped, which causes 'pi - 1' to underflow, resulting in a
write to 'qc->ap->bmdma_prd[0xffffffff]'.
Strangely though, the flag ATA_QCFLAG_DMAMAP was set in qc->flags. The
root cause is that when __ata_scsi_queuecmd() is preparing to relay a
SCSI command to an ATAPI device, it doesn't correctly validate the CDB
length before copying it into the 16-byte buffer 'cdb' in 'struct
ata_queued_cmd'. Namely, it validates the fixed CDB length expected
based on the SCSI opcode but not the actual CDB length, which can be
larger due to the use of the SG_NEXT_CMD_LEN ioctl. Since 'flags' is
the next member in ata_queued_cmd, a buffer overflow corrupts it.
Fix it by requiring that the actual CDB length be <= 16 (ATAPI_CDB_LEN).
[Really it seems the length should be required to be <= dev->cdb_len,
but the current behavior seems to have been intentionally introduced by
commit 607126c2a21c ("libata-scsi: be tolerant of 12-byte ATAPI commands
in 16-byte CDBs") to work around a userspace bug in mplayer. Probably
the workaround is no longer needed (mplayer was fixed in 2007), but
continuing to allow lengths to up 16 appears harmless for now.]
Here's a reproducer that works in QEMU when /dev/sg1 refers to the
CD-ROM drive that qemu-system-x86_64 creates by default:
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#define SG_NEXT_CMD_LEN 0x2283
int main()
{
char buf[53] = { [36] = 0x7e, [52] = 0x02 };
int fd = open("/dev/sg1", O_RDWR);
ioctl(fd, SG_NEXT_CMD_LEN, &(int){ 17 });
write(fd, buf, sizeof(buf));
}
The crash was:
BUG: unable to handle kernel paging request at ffff8cb97db37ffc
IP: ata_bmdma_fill_sg drivers/ata/libata-sff.c:2623 [inline]
IP: ata_bmdma_qc_prep+0xa4/0xc0 drivers/ata/libata-sff.c:2727
PGD fb6c067 P4D fb6c067 PUD 0
Oops: 0002 [#1] SMP
CPU: 1 PID: 150 Comm: syz_ata_bmdma_q Not tainted 4.15.0-next-20180202 #99
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-20171110_100015-anatol 04/01/2014
[...]
Call Trace:
ata_qc_issue+0x100/0x1d0 drivers/ata/libata-core.c:5421
ata_scsi_translate+0xc9/0x1a0 drivers/ata/libata-scsi.c:2024
__ata_scsi_queuecmd drivers/ata/libata-scsi.c:4326 [inline]
ata_scsi_queuecmd+0x8c/0x210 drivers/ata/libata-scsi.c:4375
scsi_dispatch_cmd+0xa2/0xe0 drivers/scsi/scsi_lib.c:1727
scsi_request_fn+0x24c/0x530 drivers/scsi/scsi_lib.c:1865
__blk_run_queue_uncond block/blk-core.c:412 [inline]
__blk_run_queue+0x3a/0x60 block/blk-core.c:432
blk_execute_rq_nowait+0x93/0xc0 block/blk-exec.c:78
sg_common_write.isra.7+0x272/0x5a0 drivers/scsi/sg.c:806
sg_write+0x1ef/0x340 drivers/scsi/sg.c:677
__vfs_write+0x31/0x160 fs/read_write.c:480
vfs_write+0xa7/0x160 fs/read_write.c:544
SYSC_write fs/read_write.c:589 [inline]
SyS_write+0x4d/0xc0 fs/read_write.c:581
do_syscall_64+0x5e/0x110 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x21/0x86
Fixes: 607126c2a21c ("libata-scsi: be tolerant of 12-byte ATAPI commands in 16-byte CDBs")
Reported-by: syzbot+1ff6f9fcc3c35f1c72a95e26528c8e7e3276e4da@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org> # v2.6.24+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Indent the numbered item with one space like all other items in the same
list.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Exit directly with ENODEV, if the AHCI controller is not available
anymore. Otherwise a delay of 500ms for each port is added to the remove
function while trying to issue a command on the non-existent controller.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This fixs the following comile warnings with ATA_DEBUG enabled,
which detected by Linaro GCC 5.2-2015.11:
drivers/ata/libata-scsi.c: In function 'ata_scsi_dump_cdb':
./include/linux/kern_levels.h:5:18: warning: format '%d' expects
argument of type 'int', but argument 6 has type 'u64 {aka long
long unsigned int}' [-Wformat=]
tj: Patch hand-applied and description trimmed.
Signed-off-by: Dong Bo <dongbo4@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- skip AER driver error recovery callbacks for correctable errors
reported via ACPI APEI, as we already do for errors reported via the
native path (Tyler Baicar)
- fix DPC shared interrupt handling (Alex Williamson)
- print full DPC interrupt number (Keith Busch)
- enable DPC only if AER is available (Keith Busch)
- simplify DPC code (Bjorn Helgaas)
- calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
Helgaas)
- enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
Helgaas)
- move ASPM internal interfaces out of public header (Bjorn Helgaas)
- allow hot-removal of VGA devices (Mika Westerberg)
- speed up unplug and shutdown by assuming Thunderbolt controllers
don't support Command Completed events (Lukas Wunner)
- add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
Jay Cornwall)
- expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)
- clean up PCI DMA interface usage (Christoph Hellwig)
- remove PCI pool API (replaced with DMA pool) (Romain Perier)
- deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
Kaya)
- move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)
- add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)
- remove warnings on sysfs mmap failure (Bjorn Helgaas)
- quiet ROM validation messages (Alex Deucher)
- remove redundant memory alloc failure messages (Markus Elfring)
- fill in types for compile-time VGA and other I/O port resources
(Bjorn Helgaas)
- make "pci=pcie_scan_all" work for Root Ports as well as Downstream
Ports to help AmigaOne X1000 (Bjorn Helgaas)
- add SPDX tags to all PCI files (Bjorn Helgaas)
- quirk Marvell 9128 DMA aliases (Alex Williamson)
- quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)
- fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
Cassel)
- use DMA API to get MSI address for DesignWare IP (Niklas Cassel)
- fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)
- fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)
- add support for ARTPEC-7 SoC (Niklas Cassel)
- add endpoint-mode support for ARTPEC (Niklas Cassel)
- add Cadence PCIe host and endpoint controller driver (Cyrille
Pitchen)
- handle multiple INTx status bits being set in dra7xx (Vignesh R)
- translate dra7xx hwirq range to fix INTD handling (Vignesh R)
- remove deprecated Exynos PHY initialization code (Jaehoon Chung)
- fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)
- fix NULL pointer dereference in iProc BCMA driver (Ray Jui)
- fix Keystone interrupt-controller-node lookup (Johan Hovold)
- constify qcom driver structures (Julia Lawall)
- rework Tegra config space mapping to increase space available for
endpoints (Vidya Sagar)
- simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)
- remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)
- add support for Global Fabric Manager Server (GFMS) event to
Microsemi Switchtec switch driver (Logan Gunthorpe)
- add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)
* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
PCI: endpoint: Fix EPF device name to support multi-function devices
PCI: endpoint: Add the function number as argument to EPC ops
PCI: cadence: Add host driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
PCI: Add vendor ID for Cadence
PCI: Add generic function to probe PCI host controllers
PCI: generic: fix missing call of pci_free_resource_list()
PCI: OF: Add generic function to parse and allocate PCI resources
PCI: Regroup all PCI related entries into drivers/pci/Makefile
PCI/DPC: Reformat DPC register definitions
PCI/DPC: Add and use DPC Status register field definitions
PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
PCI/DPC: Remove unnecessary RP PIO register structs
PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
PCI/DPC: Make RP PIO log size check more generic
PCI/DPC: Rename local "status" to "dpc_status"
PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
...
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pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.
Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().
Use pci_get_domain_bus_and_slot() and extract the actual domain number
from the pdev passed in.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata updates from Tejun Heo:
"Nothing too interesting. Several patches to convert mdelay() to
usleep_range(), removal of unused pata_at32, and other low level
driver specific changes"
* 'for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: pata_pdc2027x: Replace mdelay with msleep
ata: pata_it821x: Replace mdelay with usleep_range in it821x_firmware_command
ata: sata_mv: Replace mdelay with usleep_range in mv_reset_channel
ata: remove pata_at32
phy: brcm-sata: remove unused variable
phy: brcm-sata: fix semicolon.cocci warnings
ata: ahci_brcm: Recover from failures to identify devices
phy: brcm-sata: Implement calibrate callback
ahci: Add Intel Cannon Lake PCH-H PCI ID
ata_piix: constify pci_bits
libata:pata_atiixp: Don't use unconnected secondary port on SB600
ata: ahci_brcm: Avoid clobbering SATA_TOP_CTRL_BUS_CTRL
ahci: Allow setting a default LPM policy for mobile chipsets
ahci: Add PCI ids for Intel Bay Trail, Cherry Trail and Apollo Lake AHCI
ahci: Annotate PCI ids for mobile Intel chipsets as such
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After checking all possible call chains to pdc_adjust_pll and
pdc_detect_pll_input_clock,
my tool finds that these functions are never called in atomic context,
namely never in an interrupt handler or holding a spinlock.
And their caller functions pdc2027x_init_one and pdc2027x_reinit_one
calls pci_enable_device which can sleep, and no spinlock is held when
calling pdc_adjust_pll and pdc_detect_pll_input_clock,
so it proves that pdc_adjust_pll and pdc_detect_pll_input_clock
can call functions which can sleep.
Thus mdelay can be replaced with msleep to avoid busy wait.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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After checking all possible call chains to it821x_firmware_command here,
my tool finds that it821x_firmware_command
is never called in atomic context,
namely never in an interrupt handler or holding a spinlock.
And it821x_firmware_command calls kmalloc(GFP_KERNEL),
so it proves again that it821x_firmware_command
can call functions which can sleep.
Thus mdelay can be replaced with usleep_range to avoid busy wait.
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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After checking all possible call chains to mv_reset_channel here,
my tool finds that mv_reset_channel is never called in atomic context,
namely never in an interrupt handler or holding a spinlock.
Thus mdelay can be replaced with usleep_range to avoid busy wait.
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Since AVR32 was removed, pata_at32 is unselectable/uncompilable.
Remove this driver.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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