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5c1a56b5f6
linux/drivers
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Paul Mundt 5c1a56b5f6 video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists. 
More aggressive DMA mapping debugging has uncovered a long-standing
buglet in the way that the sh_mobile_lcdcfb driver implements its
deferred I/O callback. When used as a console driver the acceleration
routines are called by the kernel which subsequently cause the deferred
I/O work to be scheduled, resulting in the deferred I/O callback being
entered without any dirty pages on the pagelist (the normal case for
userspace accesses). It's also possible to get in to this situation via
explicit calling of fsync() when nothing has dirtied the region.

Unfortunately it's not sufficient to skip over the callback when the
pagelist is empty given the console driver use case, so instead the
callback has to conditionalize the work for panel updates and DMA
mapping depending on whether anything is resident on the pagelist or
not.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-04 15:59:04 +09:00
..
accessibility
acpi Merge branch 'misc' into release 2009-10-15 00:47:13 -04:00
amba Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and 'w90x900' into devel 2009-09-12 12:01:34 +01:00
ata sata_mv: Prevent PIO commands to be defered too long if traffic in progress. 2009-10-16 06:22:46 -04:00
atm net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
auxdisplay
base mm: oom analysis: add shmem vmstat 2009-09-22 07:17:27 -07:00
block virtio_blk: Revert serial number support 2009-10-22 16:39:30 +10:30
bluetooth pcmcia: dtl1_cs: fix pcmcia_loop_config logic 2009-09-15 10:17:16 -07:00
cdrom cdrom: gdrom: Kill off PHYSADDR use. 2009-10-13 12:30:40 +09:00
char move virtrng_remove to .devexit.text 2009-10-22 16:39:34 +10:30
clocksource sh: CMT suspend/resume 2009-08-15 12:58:45 +09:00
connector connector: Fix incompatible pointer type warning 2009-10-06 01:39:51 -07:00
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2009-09-18 09:16:57 -07:00
cpuidle cpuidle: menu governor: reduce latency on exit 2009-09-22 07:17:45 -07:00
crypto crypto: padlock-sha - Fix stack alignment 2009-09-21 23:21:53 -07:00
dca dca: module load should not be an error message 2009-09-13 10:27:04 -07:00
dio
dma Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx into for-linus 2009-09-23 18:31:11 +10:00
edac amd64_edac: fix DRAM base and limit extraction masks, v2 2009-10-16 18:51:22 +02:00
eisa
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-10-14 15:36:19 -07:00
firmware iSCSI/iBFT: use proper address translation 2009-10-05 12:05:40 -07:00
gpio const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
gpu Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel 2009-10-09 09:19:23 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2009-10-13 10:10:33 -07:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-10-11 11:23:33 -07:00
i2c i2c: Hide probe errors caused by ACPI resource conflicts 2009-10-04 22:53:45 +02:00
ide ahci / atiixp / pci quirks: rename AMD SB900 into Hudson-2 2009-10-16 06:21:20 -04:00
idle ioat: switch watchdog and reset handler from workqueue to timer 2009-09-08 17:30:24 -07:00
ieee1394 headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
ieee802154 netdev: convert bulk of drivers to netdev_tx_t 2009-09-01 01:14:07 -07:00
infiniband headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-10-22 08:27:12 +09:00
isdn headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
leds leds: leds-pca9532 - Drop unused module parameters 2009-10-04 22:53:43 +02:00
lguest headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
macintosh powerpc/pmac: Fix issues with sleep on some powerbooks 2009-10-14 16:58:35 +11:00
mca
md dm snapshot: allow chunk size to be less than page size 2009-10-16 23:18:22 +01:00
media headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
memstick memstick: move dev_dbg 2009-09-24 07:21:05 -07:00
message headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
mfd Merge branch 'sh/sdhi-mfd' 2009-10-26 10:47:44 +09:00
misc headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
mmc Merge branch 'sh/stable-updates' 2009-10-26 10:48:18 +09:00
mtd headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2009-10-23 07:35:16 +09:00
nubus
of of: remove "stm,m25p40" alias 2009-09-23 07:39:43 -07:00
oprofile oprofile: warn on freeing event buffer too early 2009-10-09 21:32:05 +02:00
parisc mm: replace various uses of num_physpages by totalram_pages 2009-09-22 07:17:38 -07:00
parport sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
pci ahci / atiixp / pci quirks: rename AMD SB900 into Hudson-2 2009-10-16 06:21:20 -04:00
pcmcia Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-10-02 16:20:43 -07:00
platform Merge branch 'misc' into release 2009-10-15 00:47:13 -04:00
pnp ACPI: remove acpi_device.flags.hardware_id 2009-09-25 15:09:48 -04:00
power Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-09-23 03:49:27 +04:00
pps pps: fix incorrect verdict check 2009-08-26 20:06:52 -07:00
ps3 powerpc/ps3: Workaround for flash memory I/O error 2009-09-11 11:28:00 +10:00
rapidio
regulator regulator: fix voltage range in da9034 ldo12 2009-09-22 13:58:23 +01:00
rtc headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
s390 [S390] sclp_vt220 build fix 2009-10-14 12:43:54 +02:00
sbus const: make block_device_operations const 2009-09-22 07:17:25 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2009-10-11 11:12:33 -07:00
serial tty, serial: Fix race and NULL check in uart_close() 2009-10-12 10:21:33 -07:00
sfi SFI: remove __init from sfi_verify_table 2009-10-03 01:16:12 -04:00
sh sh: intc: Handle legacy IRQ reservation in vector map. 2009-11-02 15:43:20 +09:00
sn
spi ARM: 5741/1: pl022: fix peripheral id for ST vendor 2009-10-05 17:55:55 +01:00
ssb ssb/sdio: fix printk format warnings 2009-09-23 11:35:41 -04:00
staging Staging: rt2860sta: prevent a panic when disabling when associated 2009-10-14 14:14:40 -07:00
tc
telephony
thermal thermal: add missing Kconfig dependency 2009-09-19 01:41:49 -04:00
uio headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
usb USB: gadget: Fix EEM driver comments and VID/PID 2009-10-14 14:54:44 -07:00
uwb headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
video video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists. 2009-11-04 15:59:04 +09:00
virtio move virtballoon_remove to .devexit.text 2009-10-22 16:39:31 +10:30
vlynq drivers/vlynq/vlynq.c: fix resource size off by 1 error 2009-09-24 07:21:05 -07:00
w1 ds2482: Discard obsolete detect method 2009-10-04 22:53:41 +02:00
watchdog watchdog: Fix rio watchdog probe function 2009-10-14 01:18:26 -07:00
xen headers: remove sched.h from poll.h 2009-10-04 15:05:10 -07:00
zorro
Kconfig
Makefile Merge git://git.infradead.org/mtd-2.6 2009-09-23 10:07:49 -07:00