| commit | a4ed06ad83acc3b7dafc018bc0b27469e787e27d | |
| author | Lennert Buytenhek <buytenh@wantstofly.org> | |
| Thu, 7 Dec 2006 04:39:57 +0000 (6 20:39 -0800) | ||
| committer | Linus Torvalds <torvalds@woody.osdl.org> | |
| Thu, 7 Dec 2006 16:39:44 +0000 (7 08:39 -0800) | ||
| tree | 26ce210d81b77b40d08b96a5a7772f806eb43d89 | treesnapshot (tar.gz zip) |
| parent | 9468f687d95d1825fd2f2c2f74e1a59429ef25d3 | commitdiff |
[PATCH] amba-pl010: clear error flags on rx error
The pl010 primecell documentation specifies that an error indicated via RSR
should be cleared by a write to ECR. We didn't do this, which was causing
errors to be re-reported on every call to pl010_rx_chars().
Doing a write to ECR once we detect an error appears to prevent the ep93xx
console UART driver from going into a mode where it reports "ttyAM0: X
input overrun(s)" every couple of keystrokes.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The pl010 primecell documentation specifies that an error indicated via RSR
should be cleared by a write to ECR. We didn't do this, which was causing
errors to be re-reported on every call to pl010_rx_chars().
Doing a write to ECR once we detect an error appears to prevent the ep93xx
console UART driver from going into a mode where it reports "ttyAM0: X
input overrun(s)" every couple of keystrokes.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| drivers/serial/amba-pl010.c | diffblobblamehistory |