tty/serial: at91: handle IRQ status more safely

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Handle the changed flag of IRQ status in interruption
instead of handling it in tasklet due to the tasklet
may be scheduled more than once in one interruption.
Otherwise, the changed status may be processed more
than once which will lead to unexpected result. And
seriously, kernel will crash.

Signed-off-by: Leilei Zhao <leilei.zhao@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Leilei Zhao 2015-04-09 10:48:15 +08:00 • committed by Greg Kroah-Hartman

parent 74a76089d2

commit d033e82db9

1 changed files with 7 additions and 6 deletions

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drivers/tty/serial/atmel_serial.c

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