serial: bfin-uart: avoid dead lock in rx irq handler in smp kernel

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Disabing dma irq and lock bottom half in smp kernel doesn't ensure exclusive
uart access. Call spin_lock_irqsave() instead.

Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Steven Miao 2012-11-07 13:27:56 +08:00 • committed by Greg Kroah-Hartman

parent 7a876b39b5

commit 9642dbe73c

1 changed files with 3 additions and 4 deletions

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drivers/tty/serial/bfin_uart.c

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