From: Nickolai Zeldovich <nickolai@csail.mit.edu>
Date: Sat, 5 Jan 2013 19:14:08 +0000 (-0500)
Subject: ALSA: au88x0: fix incorrect left shift
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=61ed1dca1645d2dd64c83a01f728dfd59fa789b6;p=openwrt%2Fstaging%2Fblogic.git

ALSA: au88x0: fix incorrect left shift

vortex_wt_setdsout performs bit-negation on the bit position (wt&0x1f)
rather than on the resulting bitmask.  This code is never actually
invoked (vortex_wt_setdsout is always called with en=1), so this does
not currently cause any problem, and this patch is simply cleanup.

Signed-off-by: Nickolai Zeldovich <nickolai@csail.mit.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/au88x0/au88x0_synth.c b/sound/pci/au88x0/au88x0_synth.c
index 2805e34bd41d..8bef47311e45 100644
--- a/sound/pci/au88x0/au88x0_synth.c
+++ b/sound/pci/au88x0/au88x0_synth.c
@@ -58,7 +58,7 @@ static void vortex_wt_setdsout(vortex_t * vortex, u32 wt, int en)
 	if (en)
 		temp |= (1 << (wt & 0x1f));
 	else
-		temp &= (1 << ~(wt & 0x1f));
+		temp &= ~(1 << (wt & 0x1f));
 	hwwrite(vortex->mmio, WT_DSREG((wt >= 0x20) ? 1 : 0), temp);
 }