| commit | 2af7cd68f1ed20e2e72c91988c3d4f457fa29ebc | |
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | |
| Wed, 4 Jan 2006 16:55:09 +0000 (4 16:55 +0000) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Wed, 4 Jan 2006 16:55:09 +0000 (4 16:55 +0000) | ||
| tree | a242ce0d1ecd154ef6bfa7aaf910a003bed3abdd | treesnapshot (tar.gz zip) |
| parent | 88026842b0a760145aa71d69e74fbc9ec118ca44 | commitdiff |
[Serial] Don't miss modem status changes
Reading the MSR register on 8250-compatible UARTs results in any
modem status interrupts being cleared. To avoid missing any
status changes, arrange for get_mctrl() to read the current
status via check_modem_status(), which will process any pending
state changes for us.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reading the MSR register on 8250-compatible UARTs results in any
modem status interrupts being cleared. To avoid missing any
status changes, arrange for get_mctrl() to read the current
status via check_modem_status(), which will process any pending
state changes for us.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| drivers/serial/8250.c | diffblobblamehistory |