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* fbmem: fix fb_info->lock and mm->mmap_sem circular locking dependencyAndrea Righi2009-04-014-20/+70
| | | | | | | | | | | | | | | | | | Fix a circular locking dependency in the frame buffer console driver pushing down the mutex fb_info->lock. Circular locking dependecies occur calling the blocking fb_notifier_call_chain() with fb_info->lock held. Notifier callbacks can try to acquire mm->mmap_sem, while fb_mmap() acquires the locks in the reverse order mm->mmap_sem => fb_info->lock. Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: fix interlaced modesKrzysztof Helt2009-04-011-14/+21
| | | | | | | | Fix calculations of timings for interlaced modes. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: fix threshold register mask for Laguna chipsKrzysztof Helt2009-04-011-1/+1
| | | | | | | | | Fix threshold register mask for Laguna chips otherwise some 8bpp modes are garbled after selecting a 24bpp mode. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: GD5434 (aka SD64) support fixedKrzysztof Helt2009-04-011-35/+37
| | | | | | | | | Fix handling of the Cirrus Logic GD5434 chip. Distinguish this chip from the GD5430. It allows detecting memory size for both models correctly. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: set MCLK in one placeKrzysztof Helt2009-04-011-54/+16
| | | | | | | | | | | | | | | | A memory clock (MCLK) is set at various places. Move the setting into one place. Set the MCLK only for Zorro cards as the x86 cards should be initialized by BIOS. Improve handling of the GD5434 (SD64). Kill one annoying debug output "virtual offset: ...". Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: add accelerator constantKrzysztof Helt2009-04-012-2/+10
| | | | | | | | | Add an accelerator constant so almost all Cirrus are recognized as accelerators by the fbset command. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: fix clock doublingKrzysztof Helt2009-04-011-1/+18
| | | | | | | | | | Cirrus' Alpine and Picasso4 chips uses DAC clock doubling to achieve full range of pixclock frequencies. [akpm@linux-foundation.org: fix spelling, use usual comment layout] Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: use 24bpp instead of 32bppKrzysztof Helt2009-04-011-35/+44
| | | | | | | | | | | The 32bpp is supported only on the latest Cirrus Logic chips. Use the 24bpp which is supported at least since Alpine chips (GD543x). Change 32bpp mode setting to 24bpp mode. Change acceleration as well. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: GD5446 fixesKrzysztof Helt2009-04-011-18/+9
| | | | | | | | | | | Various fixes to make Cirrus GD5446 chip work. Another Cirrus chip works with the cirrusfb. The gd5446 seems very similar to Alpine chips. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: fix error paths in cirrusfb_xxx_register()Krzysztof Helt2009-04-011-12/+7
| | | | | | | | | Balance iomap and iounmap and alloc and free calls in case of error druing device register (probing). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: add imageblit functionKrzysztof Helt2009-04-011-18/+46
| | | | | | | | | Add hardware color expansion (imageblit) function. It roughly doubles scrolling speed of my Alpine card (GD5430). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: acceleration improvementsKrzysztof Helt2009-04-011-111/+75
| | | | | | | | | | | | | | | | - Fix color expansion for 16bpp and 32bpp modes in the cirrusfb_RectFill(). - Make a function with a common blitter code (cirrusfb_set_blitter). - Add fb_sync function to allow a higher layer synchronize with the blitter. - Kill one redundant blitter reset. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: various Laguna fixesKrzysztof Helt2009-04-011-27/+57
| | | | | | | | | | | | | | | | | | - The Laguna GD5465 (AGP) has one register more than non-AGP chips. Recognize the AGP version and write a tile control register only on the AGP version. Tested only on an AGP card. - Bump up RAMDAC frequencies after X11 code. This allow to drive a flat panel resolution 1680x1050 at 16bpp from the 4MB card. - Fix screen start address overflow bits on Laguna cards (CRT1D register). - Fix exit path in the cirrusfb_pci_register() in case of error. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: check_var improvementsKrzysztof Helt2009-04-011-121/+74
| | | | | | | | | | | | | | | | | Break cirrusfb_decode_var() function into two parts: cirrusfb_check_pixclock() which can be called from the cirrusfb_check_var() aand merge rest into the cirrusfb_set_par_foo(). This allows rejecting modes with too high pixclock before before any change to hardware state (and a console is messed up). Also, fix RGB field's lengths for 8bpp modes to correct ones so X11 works with fbdev driver with cirrusfb. Kill some redundant function calls or register loads. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: Laguna chipset 8bpp fixKrzysztof Helt2009-04-012-14/+21
| | | | | | | | | | | | | | Fix 8bpp mode by adding handling of the Laguna chipsets to various places and stop trashing a HDR register which probably does not exist on the Laguna. Fix compilation warnings about uninitialized variables also. Finally, all 8bpp, 16bpp and 32bpp modes work on the Laguna chipset. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: various improvementsKrzysztof Helt2009-04-011-144/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various improvements to the code: - kill a structure with only one field: multiplexing and use the field directly - move the cirrusfb_ops structure down the file to kill forward declarations - move cirrusfb_init() to kill forward declaration - kill register loads done already in the init_vgachip() - kill assigments done by higher layer in the cirrusfb_pan_display() - do not overwrite line pitch bit in the CL_CRT1D register - kill btype variables if they were used only once or twice - add cpu_relax() in the busy waiting loop The fix to the CL_CRT1D register handling makess the 1024x768 32bpp mode work. Previously, only lower resolution modes have worked with 32bpp. Signed-off-by: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: use 5-6-5 RGB for 16bpp modeKrzysztof Helt2009-04-011-3/+3
| | | | | | | | | | | | Use the 5-6-5 RGB mode instead of the 5-5-5 mode at 16bpp depth. It fixes colors in the 16bpp modes on Cirrus Laguna chips. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Geert Uytterhoeven <geert.uytterhoeven@gmail.com> Cc: Arthur Marsh <arthur.marsh@internode.on.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: do not calculate line length twiceKrzysztof Helt2009-04-011-8/+6
| | | | | | | | | | | | | | A line length is calculated twice: first in the cirrusfb_decode_var() then in the cirrusfb_set_par_foo(). Use the first calculated value. A nice side effect is that 32bpp mode works now. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Geert Uytterhoeven <geert.uytterhoeven@gmail.com> Cc: Arthur Marsh <arthur.marsh@internode.on.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: add mmio registers for Laguna chipsetsKrzysztof Helt2009-04-011-0/+38
| | | | | | | | | | | | | | | | The Laguna chipsets use special registers which are available through the mmio area. The cirrusfb driver does not use memory mapped registers for the PCI cards. Add the memory mapped area for Laguna chipsets and add basic usage of the special Laguna registers after SVGALIB code. This gives readable console at 16bpp on the GD-5465 (Laguna AGP). The 8bpp and 32bpp depths are still broken. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: add Laguna additional overflow registerKrzysztof Helt2009-04-012-26/+43
| | | | | | | | | | | | | Add additional overflow register setting for Laguna chips. Also, simplify some code in the cirrusfb_pan_display() and cirrusfb_blank(). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: fix Laguna chipset memory detection and clock settingKrzysztof Helt2009-04-011-27/+38
| | | | | | | | | | | | | Fix memory detection and clock setting for Cirrus Laguna chipsets (GD5464/GD5465). The changes are done after the Xorg code. The driver still does not display anything on the GD5465 but it switches resolutions correctly at least. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cirrusfb: convert printks to dev_fooKrzysztof Helt2009-04-011-297/+158
| | | | | | | | | | | | Convert all printks to dev_dbg, dev_info or dev_err. Kill some excessive debug information and code in the process. [akpm@linux-foundation.org: printk fixes] [akpm@linux-foundation.org: cleanups] Signed-off-by: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* atyfb: fix header file trailing whitespaceRandy Dunlap2009-04-012-283/+283
| | | | | | | | | Fix trailing whitespace because quilt complained about it. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/video/uvesafb.c: don't use gfp_any()Andrew Morton2009-04-011-1/+1
| | | | | | | | | | GFP_KERNEL is legal here - we don't need to use gfp_any(). Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: test before subtraction on unsignedRoel Kluin2009-04-011-3/+3
| | | | | | | | | | | new_alarm is unsigned so test before the subtraction. [akpm@linux-foundation.org: time-wrapping fix] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-v3020: coding style cleanupMike Rapoport2009-04-011-22/+18
| | | | | | | | Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-wm8350: retries will reach -1Roel Kluin2009-04-011-2/+2
| | | | | | | | | | | With a postfix decrement retries will reach -1 rather than 0, so the warning and error-out will not occur. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add EPSON RX8025 support to DS1307 RTC driverMatthias Fuchs2009-04-012-3/+84
| | | | | | | | | | | Add support for the EPSON RX8025 RTC. The date/time registers of this chip are compatible with the DS1307. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-ds1307: true SMBus compatibilityEd Swierk2009-04-011-12/+97
| | | | | | | | | | | | | Allow the rtc-ds1307 driver to work with SMBus controllers like nforce2 that do not support i2c block transfers. Signed-off-by: Ed Swierk <eswierk@aristanetworks.com> Acked-by: Jean Delvare <khali@linux-fr.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: BARRE Sebastien <sbarre@sdelcc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: rename p pointer to rtcdann frazier2009-04-011-8/+8
| | | | | | | | | | Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: remove a couple unnecessary variablesdann frazier2009-04-011-9/+3
| | | | | | | | | | Signed-off-by: dann frazier <dannf@hp.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: remove unnecessary ret variabledann frazier2009-04-011-4/+1
| | | | | | | | | | Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: declare rtc_parisc_dev as staticdann frazier2009-04-011-1/+1
| | | | | | | | | | Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: use platform_driver_probedann frazier2009-04-011-9/+3
| | | | | | | | | | | | | This isn't a hotpluggable device, so call platform_driver_probe directly in parisc_rtc_init Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: use rtc_valid_tm() in parisc_get_timedann frazier2009-04-011-1/+1
| | | | | | | | | | | | Use the return value of rtc_valid_tm() instead of just returning 0. Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: remove struct parisc_rtcdann frazier2009-04-011-12/+7
| | | | | | | | | | | | | parisc_rtc now only includes an rtc_device pointer, so let's just use the rtc_device type directly. Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: remove redundant lockingdann frazier2009-04-011-11/+1
| | | | | | | | | | | | The RTC subsystem proides ops locking, no need to implement our own Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-parisc: add a missing include for linux/rtc.hdann frazier2009-04-011-0/+1
| | | | | | | | | | Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add platform driver for EFIdann frazier2009-04-014-0/+262
| | | | | | | | | | | | | Munge Stephane Eranian's efirtc.c code into an rtc platform driver [akpm@linux-foundation.org: use is_leap_year()] Signed-off-by: dann frazier <dannf@hp.com> Cc: Alessandro Zummo <alessandro.zummo@towertech.it> Cc: stephane eranian <eranian@googlemail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: convert LEAP_YEAR into an inlineAndrew Morton2009-04-012-4/+9
| | | | | | | | | | | | | | | | | - the LEAP_YEAR macro is buggy - it references its arg multiple times. Fix this by turning it into a C function. - give it a more approriate name - Move it to rtc.h so that other .c files can use it, instead of copying it. Cc: dann frazier <dannf@hp.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Cc: stephane eranian <eranian@googlemail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: convert wm8350 use new alarm and update operationsMark Brown2009-04-011-21/+18
| | | | | | | | | | These are the only two ioctls so the ioctl() function is also removed. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs4: fix kernel includesIan Kent2009-04-012-3/+10
| | | | | | | | | | autofs_dev-ioctl.h is included by both the kernel module and user space tools and it includes two kernel header files. Compiles work if the kernel headers are installed but fail otherwise. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs4: fix lookup deadlockIan Kent2009-04-011-20/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A deadlock can occur when user space uses a signal (autofs version 4 uses SIGCHLD for this) to effect expire completion. The order of events is: Expire process completes, but before being able to send SIGCHLD to it's parent ... Another process walks onto a different mount point and drops the directory inode semaphore prior to sending the request to the daemon as it must ... A third process does an lstat on on the expired mount point causing it to wait on expire completion (unfortunately) holding the directory semaphore. The mount request then arrives at the daemon which does an lstat and, deadlock. For some time I was concerned about releasing the directory semaphore around the expire wait in autofs4_lookup as well as for the mount call back. I finally realized that the last round of changes in this function made the expiring dentry and the lookup dentry separate and distinct so the check and possible wait can be done anywhere prior to the mount call back. This patch moves the check to just before the mount call back and inside the directory inode mutex release. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs4: cleanup expire code duplicationIan Kent2009-04-013-38/+20
| | | | | | | | | | | A significant portion of the autofs_dev_ioctl_expire() and autofs4_expire_multi() functions is duplicated code. This patch cleans that up. Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ecryptfs: use kzfree()Johannes Weiner2009-04-012-4/+2
| | | | | | | | | | Use kzfree() instead of memset() + kfree(). Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc/fsl_soc: isolate legacy fsl_spi support to mpc832x_rdb boardsAnton Vorontsov2009-04-013-111/+107
| | | | | | | | | | | | | | | The advantages of this: - Don't encourage legacy support; - Less external symbols, less code to compile-in for !MPC832x_RDB platforms. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc/83xx: add mmc-spi support via the device tree for MPC8323E-RDBAnton Vorontsov2009-04-012-0/+30
| | | | | | | | | | | | | | | - Add gpio-controller node to manage QE GPIO Bank D; - Add mmc-spi node; - Modify board file so that it won't use legacy SPI support with the new device trees. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc: add mmc-spi-slot bindingsAnton Vorontsov2009-04-012-0/+24
| | | | | | | | | | | | | | | | The bindings describes a case where MMC/SD/SDIO slot directly connected to a SPI bus. Such setups are widely used on embedded PowerPC boards. The patch also adds the mmc-spi-slot entry to the OpenFirmware modalias table. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_mpc83xx: add OF platform driver bindingsAnton Vorontsov2009-04-012-37/+295
| | | | | | | | | | | | | | | | Implement full support for OF SPI bindings. Now the driver can manage its own chip selects without any help from the board files and/or fsl_soc constructors. The "legacy" code is well isolated and could be removed as time goes by. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_mpc83xx: rework chip selects handlingAnton Vorontsov2009-04-015-37/+23
| | | | | | | | | | | | | | | | | | The main purpose of this patch is to pass 'struct spi_device' to the chip select handling routines. This is needed so that we could implement full-fledged OpenFirmware support for this driver. While at it, also: - Replace two {de,activate}_cs routines by single cs_contol(). - Don't duplicate platform data callbacks in mpc83xx_spi struct. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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