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9b96fbacda
linux/drivers
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Linus Walleij 9b96fbacda serial: PL011: clear pending interrupts 
Chanho Min reported that when the boot loader transfers
control to the kernel, there may be pending interrupts
causing the UART to lock up in an eternal loop trying to
pick tokens from the FIFO (since the RX interrupt flag
indicates there are tokens) while in practice there are
no tokens - in fact there is only a pending IRQ flag.

This patch address the issue with a combination of two
patches suggested by Russell King that clears and mask
all interrupts at probe() and clears any pending error
and RX interrupts at port startup time.

We suspect the spurious interrupts are a side-effect of
switching the UART from FIFO to non-FIFO mode.

Cc: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Reported-by: Chanho Min <chanho0207@gmail.com>
Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Jong-Sung Kim <neidhard.kim@lge.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-14 12:27:39 -07:00
..
accessibility vt:tackle kbd_table 2012-03-08 10:50:35 -08:00
acpi ACPI: remove duplicated lines of merging problems with acpi_processor_add 2012-02-08 15:07:03 -08:00
amba
ata [libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list 2012-01-17 20:50:53 -05:00
atm module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
auxdisplay
base driver-core: cpu: fix kobject warning when hotplugging a cpu 2012-02-08 15:11:17 -08:00
bcma bcma: connect the bcma bus suspend/resume to the bcma driver suspend/resume 2012-01-17 09:54:08 -05:00
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2012-02-02 15:47:33 -08:00
bluetooth module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
cdrom block: add and use scsi_blk_cmd_ioctl 2012-01-14 15:07:24 -08:00
char TTY: remove unneeded tty->index checks 2012-03-08 11:42:21 -08:00
clk
clocksource
connector
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2012-01-11 18:53:33 -08:00
cpuidle
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2012-01-10 22:01:27 -08:00
dca
devfreq
dio
dma i.MX SDMA: Fix burstsize settings 2012-02-02 14:00:43 +05:30
edac module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
eisa
firewire firewire: ohci: disable MSI on Ricoh controllers 2012-01-30 21:33:34 +01:00
firmware Merge commit '070680218379e15c1901f4bf21b98e3cbf12b527' into stable/for-linus-fixes-3.3 2012-01-12 11:53:55 -05:00
gpio gpio: Add missing spin_lock_init in gpio-ml-ioh driver 2012-02-01 21:59:37 -07:00
gpu drm/radeon/kms/blit: fix blit copy for very large buffers 2012-02-02 15:54:48 +00:00
hid HID: wiimote: fix invalid power_supply_powers call 2012-02-07 13:40:56 +01:00
hv
hwmon hwmon: (w83627ehf) Fix number of fans for NCT6776F 2012-02-04 18:08:23 -08:00
hwspinlock
i2c i2c: OMAP: Fix OMAP1 build error 2012-01-20 08:24:22 -08:00
ide block: add and use scsi_blk_cmd_ioctl 2012-01-14 15:07:24 -08:00
idle ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores 2012-01-19 21:26:32 -05:00
ieee802154
infiniband IB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring() 2012-02-06 08:57:11 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2012-02-04 10:57:42 -08:00
iommu iommu/msm: Fix error handling in msm_iommu_unmap() 2012-01-30 12:53:14 +01:00
isdn TTY: isdn/gigaset, use tty_port 2012-03-08 12:51:13 -08:00
leds drivers/leds/leds-lm3530.c: fix setting pltfm->als_vmax 2012-02-08 19:03:51 -08:00
lguest lguest: Make sure interrupt is allocated ok by lguest_setup_irq 2012-01-12 15:44:47 +10:30
macintosh module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
mca
md Some simple md-related fixes. 2012-02-08 19:06:30 -08:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-01-26 17:04:47 -08:00
memstick module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
message SCSI updates for post 3.2 merge window 2012-01-10 10:36:08 -08:00
mfd mfd: Avoid twl6040-codec PLL reconfiguration when not needed 2012-02-03 19:03:50 +01:00
misc TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
mmc TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
mtd - Fix a regression in 16-bit Atmel NAND flash which was introduced in 3.1 2012-02-04 07:17:47 -08:00
net NET: pc300, show version info from module init 2012-03-08 11:47:01 -08:00
nfc
nubus
of 2nd set of device tree changes for v3.3 2012-01-14 13:25:55 -08:00
oprofile
parisc Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-01-11 18:50:26 -08:00
parport Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1 2012-01-14 12:32:16 -08:00
pci kernel-doc: fix new warnings in pci 2012-01-23 08:44:53 -08:00
pcmcia pcmcia: fix socket refcount decrementing on each resume 2012-02-08 19:03:51 -08:00
pinctrl pinctrl: add checks for empty function names 2012-01-26 14:13:11 +01:00
platform module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
pnp
power module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
pps
ps3
ptp
rapidio
regulator This fixes an integration issue with the regulator device tree bindings 2012-01-30 10:16:25 -08:00
rtc Revert "RTC: sa1100: remove redundant code of setting alarm" 2012-01-19 17:26:26 +00:00
s390 TTY: remove unneeded tty->index checks 2012-03-08 11:42:21 -08:00
sbus
scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2012-01-26 12:43:57 -08:00
sfi
sh SH/R-Mobile updates for 3.3 merge window. 2012-01-11 23:29:20 -08:00
sn
spi spi-topcliff-pch: rename pch_spi_pcidev to pch_spi_pcidev_driver 2012-02-05 23:24:17 -07:00
ssb
staging TTY: speakup, do not use serialP 2012-03-08 11:47:02 -08:00
target target: Fix unsupported WRITE_SAME sense payload 2012-02-07 06:48:58 +00:00
tc
telephony
thermal thermal: Rename generate_netlink_event 2012-01-23 03:15:25 -05:00
tty serial: PL011: clear pending interrupts 2012-03-14 12:27:39 -07:00
uio Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-01-11 18:50:26 -08:00
usb TTY: remove unneeded tty->index checks 2012-03-08 11:42:21 -08:00
uwb
vhost vhost-net: add module alias (v2.1) 2012-01-13 10:12:23 -08:00
video fbdev fixes for 3.3 2012-02-07 15:54:02 -08:00
virt
virtio virtio: correct the memory barrier in virtqueue_kick_prepare() 2012-01-28 08:10:23 +10:30
vlynq
w1
watchdog watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs 2012-01-27 10:01:16 +01:00
xen xen/granttable: Disable grant v2 for HVM domains. 2012-01-27 11:14:16 -05:00
zorro
Kconfig
Makefile mmc: sdhci-pci: add platform data 2012-01-11 23:58:47 -05:00