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Mugunthan V N af5c6df704 drivers: net: cpsw: irq not disabled in cpsw isr in particular sequence 
In CPSW NAPI, after processing all interrupts IRQ is enabled and then book
keeping irq_enabled is updated. In random cases when a packet is transmitted
or received between processing packets and IRQ enabled, then just after
enabled IRQ and before irq_enabled is updated, ISR is called so IRQs are
not disabled as irq_enabled is still false and CPU gets locked in CPSW ISR.

By changing the sequence as update the irq_enabled and then enable IRQ
fixes the issue. This issue is not captured always as it is a timing issue
whether Tx or Rx IRQ is invoked between packet processing and enable IRQ.

Cc: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2013-05-02 16:52:04 -04:00
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accessibility
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acpi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
amba
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ata Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
atm atm: he: use mdelay instead of large udelay constants 2013-04-29 13:26:48 -04:00
auxdisplay
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base Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-05-01 13:20:04 -07:00
bcma
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block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
bus
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cdrom
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char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
clk ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
clocksource ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
connector
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cpufreq Merge branch 'pm-cpufreq' 2013-04-29 00:08:46 +02:00
cpuidle cpuidle: add maintainer entry 2013-04-26 22:30:25 +02:00
crypto ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
dca
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devfreq
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dio
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dma Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
edac Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac 2013-04-30 10:00:49 -07:00
eisa PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
extcon This is small fixes for extcon driver. 2013-04-08 16:50:23 -07:00
firewire
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firmware Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
gpio ARM: arm-soc platform updates for 3.10, part 1 2013-05-02 09:31:45 -07:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2013-04-30 09:37:55 -07:00
hsi
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hv Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:41:21 -07:00
hwmon Highlights: 2013-04-30 15:15:24 -07:00
hwspinlock hwspinlock: fix __hwspin_lock_request error path 2013-04-05 17:45:11 +03:00
i2c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
ide procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
idle Merge branch 'pm-cpuidle' 2013-04-28 01:54:49 +02:00
iio
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infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:40:35 -07:00
ipack
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irqchip ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
isdn Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
leds
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lguest lguest: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
macintosh procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
mailbox
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md MD: ignore discard request for hard disks of hybid raid1/raid10 array 2013-04-30 14:49:36 +10:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
memory
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memstick drivers/memstick/host/r592.c: make r592_pm_ops static 2013-04-30 17:04:08 -07:00
message Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
mfd ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
mmc ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
mtd ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
net drivers: net: cpsw: irq not disabled in cpsw isr in particular sequence 2013-05-02 16:52:04 -04:00
nfc NFC: pn544: Add MEI physical layer 2013-04-16 00:39:41 +02:00
ntb
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nubus nubus: Don't use create_proc_read_entry() 2013-04-29 15:41:54 -04:00
of Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
oprofile
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parisc procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
parport
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pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
pcmcia
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pinctrl ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
platform Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
pnp Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
power Highlights: 2013-04-30 15:15:24 -07:00
pps Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
ps3
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ptp ptp: dynamic allocation of PHC char devices 2013-04-12 18:22:45 -04:00
pwm
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rapidio
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regulator Merge remote-tracking branch 'regulator/topic/wm8994' into v3.9-rc8 2013-04-28 02:13:50 +01:00
remoteproc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
rpmsg drivers/rpmsg/virtio_rpmsg_bus.c: fix error return code in rpmsg_probe() 2013-04-29 18:28:13 -07:00
rtc ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
sbus
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scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
sfi
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sh
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sn
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spi spi: Updates for v3.10 2013-04-29 16:38:41 -07:00
ssb ssb: implement ssb spuravoid for chipid BCM43222 2013-04-26 08:42:22 -04:00
ssbi
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staging ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
target Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
tc
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thermal thermal/exynos: remove unnecessary header inclusions 2013-04-19 13:51:23 +02:00
tty Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
uio
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usb ARM: arm-soc cleanup for 3.10 2013-05-02 09:03:55 -07:00
uwb uwb: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
vfio PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
video Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
virt
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virtio
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vlynq
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vme
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w1 drivers/w1/slaves/w1_ds2760.c: fix the error handling in w1_ds2760_add_slave() 2013-04-30 17:04:08 -07:00
watchdog watchdog: Revert the AT91RM9200_WATCHDOG dependency 2013-04-14 09:09:10 +02:00
xen zcache/tmem: Better error checking on frontswap_register_ops return value. 2013-04-30 17:04:01 -07:00
zorro proc: Supply PDE attribute setting accessor functions 2013-05-01 17:29:18 -04:00
Kconfig kconfig menu: move Virtualization drivers near other virtualization options 2013-04-30 17:04:09 -07:00
Makefile USB patches for 3.10-rc1 2013-04-29 12:19:23 -07:00