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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
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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
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cpuidle
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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
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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
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extcon
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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
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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
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idle
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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
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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
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ntb
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nubus
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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
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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
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pwm
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rapidio
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regulator
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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
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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
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ssb
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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
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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
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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
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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
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