diff options
| author | Loic Poulain <loic.poulain@intel.com> | 2014-04-24 11:34:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:08 -0700 |
| commit | 7d056f1066bd1d677273e3db285e00f0fd80674d (patch) | |
| tree | fab33dd9a9f971f10dc06bf6f633ed0c147271f6 /drivers/tty/ipwireless/Makefile | |
| parent | e83c667a1f451b1ae47a27d5e2ef0acb5f2c5b3d (diff) | |
serial: 8250: Fix thread unsafe __dma_tx_complete function
commit f8fd1b0350d3a4581125f5eda6528f5a2c5f9183 upstream.
__dma_tx_complete is not protected against concurrent
call of serial8250_tx_dma. it can lead to circular tail
index corruption or parallel call of serial_tx_dma on the
same data portion.
This patch fixes this issue by holding the port lock.
Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/ipwireless/Makefile')
0 files changed, 0 insertions, 0 deletions