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 13:25:30 -0700 |
| commit | e179df5fd9250ae67f8e8fcb1e56a43ce820fcae (patch) | |
| tree | b593e3410f89ce6ef7fa9611da0a4795b74e953c /kernel/timer.c | |
| parent | 96679ed69d1a369161e032894c7d2967a8e21031 (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 'kernel/timer.c')
0 files changed, 0 insertions, 0 deletions