diff options
| author | Christian Gromm <christian.gromm@microchip.com> | 2016-06-13 16:24:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-15 20:18:56 +0200 |
| commit | 1c88f8ff4290fd348de1cf27d403e0fc86474007 (patch) | |
| tree | 4f7b73352c2b5c289699f98cac82b525113467fc /drivers/staging/most/hdm-dim2/dim2_hal.c | |
| parent | 63c87669c4ffbe6fa2687b48a871b054a8267265 (diff) | |
staging: most: dim2-hdm: fix possible kernel freeze when reusing a dim2 channel
If a DIM2 channel is being closed while it is busy, the channels's status
flag could possibly stay active for this very channel. This causes the
kernel to freeze by the time the channel is opened again.
This patch fixes the problem.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/most/hdm-dim2/dim2_hal.c')
| -rw-r--r-- | drivers/staging/most/hdm-dim2/dim2_hal.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/most/hdm-dim2/dim2_hal.c b/drivers/staging/most/hdm-dim2/dim2_hal.c index 8783dbbdafdc..a0b935c72671 100644 --- a/drivers/staging/most/hdm-dim2/dim2_hal.c +++ b/drivers/staging/most/hdm-dim2/dim2_hal.c @@ -342,6 +342,9 @@ static void dim2_clear_channel(u8 ch_addr) dim2_clear_cat(MLB_CAT, ch_addr); dim2_clear_cdt(ch_addr); + + /* clear channel status bit */ + dimcb_io_write(&g.dim2->ACSR0, bit_mask(ch_addr)); } /* -------------------------------------------------------------------------- */ |