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ALSA: ctxfi: Fix the incorrect check of dma_set_mask() call

Message ID 20170320092417.6158-1-tiwai@suse.de (mailing list archive)
State New, archived
Headers show

Commit Message

Takashi Iwai March 20, 2017, 9:24 a.m. UTC
In the commit [15c75b09f8d1: ALSA: ctxfi: Fallback DMA mask to 32bit],
I forgot to put "!" at dam_set_mask() call check in cthw20k1.c (while
cthw20k2.c is OK).  This patch fixes that obvious bug.

(As a side note: although the original commit was completely wrong,
 it's still working for most of machines, as it sets to 32bit DMA mask
 in the end.  So the bug severity is low.)

Fixes: 15c75b09f8d1 ("ALSA: ctxfi: Fallback DMA mask to 32bit")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/ctxfi/cthw20k1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/sound/pci/ctxfi/cthw20k1.c b/sound/pci/ctxfi/cthw20k1.c
index ab4cdab5cfa5..79edd88d5cd0 100644
--- a/sound/pci/ctxfi/cthw20k1.c
+++ b/sound/pci/ctxfi/cthw20k1.c
@@ -1905,7 +1905,7 @@  static int hw_card_start(struct hw *hw)
 		return err;
 
 	/* Set DMA transfer mask */
-	if (dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
+	if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
 	} else {
 		dma_set_mask(&pci->dev, DMA_BIT_MASK(32));