diff options
| author | Loic Poulain <loic.poulain@intel.com> | 2014-04-24 11:34:48 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-06-06 11:40:21 +0200 |
| commit | e5ffcda2cdc477940a4f86ff7f60316d4d3703f6 (patch) | |
| tree | d5cdbda1bd785f8dd7e0b3c4a9346dbcc263af0b /lib | |
| parent | d214ff2381dcbe76574026cb1f8dd49910216bfe (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: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions