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(parent: 5a2f81b) | patch
serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it...
authorSonic Zhang <sonic.zhang@analog.com>
Tue, 13 Mar 2012 07:51:55 +0000 (15:51 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 13 Mar 2012 21:33:39 +0000 (14:33 -0700)
commit95b61b57fa367bc9dd09a31cf7583278259e9984
tree60c771ae0b9cc03e7687f3486f38c3d5d0a6027atree | snapshot
parent5a2f81b81f688cdbdc098f72d1ab13780b914da8commit | diff
serial: bfin-uart: Don't access tty circular buffer in TX DMA interrupt after it is reset.

When kernel reboot, tty circular buffer is reset before last TX DMA interrupt is called,
while the buffer tail is updated in TX DMA interrupt handler. So, don't update the buffer
tail if it is reset.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/bfin_uart.c diff | blob | history
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