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26eed9a5c6
android_kernel_xiaomi_sm8350/drivers
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Linus Walleij 26eed9a5c6 [ARM] 5022/1: Race in ARM MMCI PL18x driver, V2 
Updated version of 4446/1. This also drops the suggested comparison
of host_remain for == 0, since that doesn't make sense (still works
for us, too). We have verified that this patch solve race problems
on atleast 2 archs at high frequencies.

(Verbatim copy of old patch text below.)

The patch below fixes a race condition in the ARM MMCI PL18x driver.

If new data arrives in the FIFO while existing data is being read then
we get a second iteration of the loop in mmci_pio_read.

However host->size is not updated until after mmci_pio_read returns,
so we get count = number of new bytes PLUS number of bytes already
copied in the first iteration. This results in a FIFO underrun as
we try and read mode data than is available.

The fix is to compensating for data read on previous iterations
when calculating the amount of data in the FIFO.

Signed-off-by: Linus Walleij <triad@df.lth.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-28 17:03:34 +01:00
..
acorn/char
acpi fix idle (arch, acpi and apm) and lockdep 2008-04-27 00:01:45 +02:00
amba
ata pata_bf54x: decrease count first. 2008-04-25 01:26:28 -04:00
atm drivers/atm: use time_before, time_before_eq, etc 2008-04-19 18:14:50 -07:00
auxdisplay
base bus_remove_device: be more careful about incomplete initialization 2008-04-22 17:40:36 -07:00
block xen: Add compatibility aliases for frontend drivers 2008-04-24 23:57:33 +02:00
bluetooth hci_usb: remove code obfuscation 2008-04-19 18:17:26 -07:00
cdrom cdrom: use kmalloced buffers instead of buffers on stack 2008-04-21 09:50:08 +02:00
char Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 2008-04-26 09:29:36 -07:00
clocksource
connector
cpufreq
cpuidle
crypto [CRYPTO] padlock-aes: Use generic setkey function 2008-04-21 10:19:34 +08:00
dca
dio
dma DMA engine: typo fixes 2008-04-21 22:38:45 +00:00
edac
eisa
firewire
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6 2008-04-21 15:49:58 -07:00
gpio
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2008-04-25 12:38:14 -07:00
hwmon
i2c i2c: Fix platform driver hotplug/coldplug 2008-04-22 22:16:49 +02:00
ide ide-tape: remove tape->merge_stage 2008-04-27 15:38:34 +02:00
ieee1394 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2008-04-25 12:24:06 -07:00
infiniband RDMA/nes: Remove volatile qualifier from struct nes_hw_cq.cq_vbase 2008-04-23 11:55:45 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2008-04-27 10:10:37 -07:00
isdn Merge branch 'irq-cleanups-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2008-04-21 15:56:19 -07:00
leds leds: Add default-on trigger 2008-04-25 00:06:52 +01:00
lguest
macintosh mac-hid: fix build after lockdep annotation 2008-04-25 18:57:09 -07:00
mca
md dm: remove md argument from specific_minor 2008-04-25 13:27:02 +01:00
media V4L/DVB (7751): ir-kbd-i2c: Save a temporary memory allocation in ir_probe 2008-04-26 09:29:58 -03:00
memstick memstick: convert struct class_device to struct device 2008-04-19 19:10:29 -07:00
message SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
mfd Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-04-24 08:36:11 -07:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-04-27 11:25:00 -07:00
mmc [ARM] 5022/1: Race in ARM MMCI PL18x driver, V2 2008-04-28 17:03:34 +01:00
mtd [MTD] m25p80: Add Support for ATMEL AT25DF641 64-Megabit SPI Flash 2008-04-25 09:14:23 +01:00
net Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2008-04-27 10:10:14 -07:00
nubus
of [POWERPC] drivers/of/of_i2c.c: Add MODULE_LICENSE 2008-04-24 20:58:01 +10:00
oprofile
parisc PCI: remove parisc consumer of the pci global_list 2008-04-20 21:47:01 -07:00
parport avr32: don't offer PARPORT_PC 2008-04-19 20:40:10 -04:00
pci intel-iommu.c: dma ops fix 2008-04-24 23:15:43 +02:00
pcmcia [ARM] pxa: fix 0e623941be 2008-04-21 12:52:03 +01:00
pnp pnpacpi: fix potential corruption on "pnpacpi: exceeded the max number of IRQ resources 2" 2008-04-23 12:22:13 -07:00
power
ps3
rapidio
rtc
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-04-27 11:25:00 -07:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-04-27 11:25:00 -07:00
serial Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-04-25 12:52:16 -07:00
sh
sn
spi
ssb ssb: Fix all-ones boardflags 2008-04-23 21:25:35 -04:00
tc
telephony
thermal
uio UIO: hold a reference to the device's owner while the device is open 2008-04-19 19:10:18 -07:00
usb usb: don't update devnum for wusb devices 2008-04-24 21:16:59 -07:00
video xen pvfb: Para-virtual framebuffer, keyboard and pointer driver 2008-04-24 23:57:33 +02:00
virtio
w1
watchdog
xen xen: add balloon driver 2008-04-24 23:57:33 +02:00
zorro
Kconfig xen: add balloon driver 2008-04-24 23:57:33 +02:00
Makefile