From: <gregkh@linuxfoundation.org>
To: tiwai@suse.de, dan.carpenter@oracle.com, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()" has been added to the 3.14-stable tree
Date: Sun, 24 Jul 2016 17:29:05 -0700 [thread overview]
Message-ID: <1469406545169155@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-au88x0-fix-calculation-in-vortex_wtdma_bufshift.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 62db7152c924e4c060e42b34a69cd39658e8a0dc Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 29 Jun 2016 15:23:08 +0200
Subject: ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()
From: Takashi Iwai <tiwai@suse.de>
commit 62db7152c924e4c060e42b34a69cd39658e8a0dc upstream.
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/au88x0/au88x0_core.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/sound/pci/au88x0/au88x0_core.c
+++ b/sound/pci/au88x0/au88x0_core.c
@@ -1442,9 +1442,8 @@ static int vortex_wtdma_bufshift(vortex_
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 {
Patches currently in stable-queue which might be from tiwai@suse.de are
queue-3.14/alsa-ctl-stop-notification-after-disconnection.patch
queue-3.14/alsa-dummy-fix-a-use-after-free-at-closing.patch
queue-3.14/alsa-au88x0-fix-calculation-in-vortex_wtdma_bufshift.patch
reply other threads:[~2016-07-25 0:28 UTC|newest]
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