| commit | 1df726ef0a700587a712a3660b2caa8e533c7de9 | |
| author | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Mon, 5 Sep 2011 07:58:29 +0000 (5 08:58 +0100) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Mon, 5 Sep 2011 07:58:29 +0000 (5 08:58 +0100) | ||
| tree | 02086e08de0cb385a332833bdc14b7c12c92b50a | treesnapshot (tar.gz zip) |
| parent | fb492c9160f3d40d09456a79cc669fba74d7d9cc | commitdiff |
NET: am79c961: fix race in link status code
The link status code operates from a timer, and writes the index
register without first taking a lock. A well-placed interrupt
between writing the index register and reading the data register
could change the index register on us, which will return wrong data.
Add the necessary lock.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The link status code operates from a timer, and writes the index
register without first taking a lock. A well-placed interrupt
between writing the index register and reading the data register
could change the index register on us, which will return wrong data.
Add the necessary lock.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| drivers/net/arm/am79c961a.c | diffblobblamehistory |