dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ALSA: als4000: Fix potentially invalid DMA mode setup 

My previous patch assumed that the DMA mode (represented by 3 lowest bits of
ALS4K_GCR99_DMA_EMULATION_CTRL register) is set to the default value 0. If
that's not the case, it might result in invalid mode to be set.
This patch fixes this potential problem.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Ondrej Zary 2010-08-04 21:56:44 +02:00 committed by Takashi Iwai
parent b9619230e1
commit c4685849b4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/pci/als4000.c
View File

@ -765,7 +765,7 @@ static void snd_als4000_configure(struct snd_sb *chip)
snd_als4k_gcr_write(chip, i, 0);
/* enable burst mode to prevent dropouts during high PCI bus usage */
snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) | 0x04);
(snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
spin_unlock_irq(&chip->reg_lock);
}