[alsa-devel] [PATCH 3/3] ALSA: cs5535audio: Fix invalid endian conversion

[Takashi Iwai]

One place in cs5535audio_build_dma_packets() does an extra conversion
via cpu_to_le32(); namely jmpprd_addr is passed to setup_prd() ops,
which writes the value via cs_writel().  That is, the callback does
the conversion by itself, and we don't need to convert beforehand.

This patch fixes that bogus conversion.

Cc: <stable at vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/pci/cs5535audio/cs5535audio.h     | 6 +++---
 sound/pci/cs5535audio/cs5535audio_pcm.c | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h
index f4fcdf93f3c8..d84620a0c26c 100644
--- a/sound/pci/cs5535audio/cs5535audio.h
+++ b/sound/pci/cs5535audio/cs5535audio.h
@@ -67,9 +67,9 @@ struct cs5535audio_dma_ops {
 };
 
 struct cs5535audio_dma_desc {
-	u32 addr;
-	u16 size;
-	u16 ctlreserved;
+	__le32 addr;
+	__le16 size;
+	__le16 ctlreserved;
 };
 
 struct cs5535audio_dma {
diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
index ee7065f6e162..326caec854e1 100644
--- a/sound/pci/cs5535audio/cs5535audio_pcm.c
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -158,8 +158,8 @@ static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au,
 	lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
 	lastdesc->size = 0;
 	lastdesc->ctlreserved = cpu_to_le16(PRD_JMP);
-	jmpprd_addr = cpu_to_le32(lastdesc->addr +
-				  (sizeof(struct cs5535audio_dma_desc)*periods));
+	jmpprd_addr = (u32)dma->desc_buf.addr +
+		sizeof(struct cs5535audio_dma_desc) * periods;
 
 	dma->substream = substream;
 	dma->period_bytes = period_bytes;
-- 
2.18.0