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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-04-11 10:59:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-09 15:54:48 -0700 |
| commit | e028e896b4a5adb887533e827b57e842f8b2173f (patch) | |
| tree | 0e3d0e31349bd1d5ff53fe58eb96f8a0eaad3489 /sound | |
| parent | 16b0c220618ffbe2e76cc5b20176c0cf7c3e6888 (diff) | |
serial/imx: read cts state only after acking cts change irq
commit 5680e94148a86e8c31fdc5cb0ea0d5c6810c05b0 upstream.
If cts changes between reading the level at the cts input (USR1_RTSS)
and acking the irq (USR1_RTSD) the last edge doesn't generate an irq and
uart_handle_cts_change is called with a outdated value for cts.
The race was introduced by commit
ceca629 ([ARM] 2971/1: i.MX uart handle rts irq)
Reported-by: Arwed Springer <Arwed.Springer@de.trumpf.com>
Tested-by: Arwed Springer <Arwed.Springer@de.trumpf.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions