From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 5 Sep 2005 08:36:27 +0000 (+0200)
Subject: [ALSA] opti93x: optimize a register access
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=db67319ac29d2f35ece30bce6a9b611afd6b600f;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[ALSA] opti93x: optimize a register access

Opti9xx drivers
When clearing some bits in a register, don't bother with the bits that
won't be changed anyway.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
---

diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index 411a702d85b..782750d62eb 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -1038,8 +1038,7 @@ static int snd_opti93x_capture_prepare(snd_pcm_substream_t *substream)
 
 	chip->c_dma_size = size;
 	snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF,
-		OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO,
-		(unsigned char)~(OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO));
+		OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO, 0);
 
 	snd_dma_program(chip->dma2, runtime->dma_addr, size,
 		DMA_MODE_READ | DMA_AUTOINIT);