diff options
| author | Takashi Iwai <tiwai@suse.de> | 2016-06-29 15:23:08 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-07-19 13:56:07 -0400 |
| commit | 9a6bc7f995b444b0a70f6d897a7f94fbb519f92a (patch) | |
| tree | bb591b5c4fc460a4335956938939e2a5401bc32f | |
| parent | 9e0303eb05f9c4f8920570a4b047e2ae3a7964eb (diff) | |
ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()
[ Upstream commit 62db7152c924e4c060e42b34a69cd39658e8a0dc ]
vortex_wtdma_bufshift() function does calculate the page index
wrongly, first masking then shift, which always results in zero.
The proper computation is to first shift, then mask.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | sound/pci/au88x0/au88x0_core.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c index 4667c3232b7f..74177189063c 100644 --- a/sound/pci/au88x0/au88x0_core.c +++ b/sound/pci/au88x0/au88x0_core.c @@ -1444,9 +1444,8 @@ static int vortex_wtdma_bufshift(vortex_t * vortex, int wtdma) int page, p, pp, delta, i; page = - (hwread(vortex->mmio, VORTEX_WTDMA_STAT + (wtdma << 2)) & - WT_SUBBUF_MASK) - >> WT_SUBBUF_SHIFT; + (hwread(vortex->mmio, VORTEX_WTDMA_STAT + (wtdma << 2)) + >> WT_SUBBUF_SHIFT) & WT_SUBBUF_MASK; if (dma->nr_periods >= 4) delta = (page - dma->period_real) & 3; else { |