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[2/2] ALSA: ump: Fix parsing of 0xFx command

Message ID 20230525083124.15277-2-tiwai@suse.de
State Accepted
Commit 77700b81bd0e47d89d50eb4b3f2f323492f79998
Headers show
Series [1/2] ALSA: ump: Drop redundant check of note-on with zero velocity | expand

Commit Message

Takashi Iwai May 25, 2023, 8:31 a.m. UTC 
The MIDI 1.0 parser retrieved the 0xFx command with a wrong bit shift,
resulting in the bogus type.  Fix the bit shift size.

Fixes: 0b5288f5fe63 ("ALSA: ump: Add legacy raw MIDI support")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/0fbc0b27-54b8-4cda-800e-37e7a03fed39@kili.mountain
Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/core/ump_convert.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/sound/core/ump_convert.c b/sound/core/ump_convert.c
index 164829d3e305..48ab3e1bd62e 100644
--- a/sound/core/ump_convert.c
+++ b/sound/core/ump_convert.c
@@ -454,7 +454,7 @@  static int do_convert_to_ump(struct snd_ump_endpoint *ump,
 	}
 
 	if (c & 0x80) {
-		bytes = cmd_bytes[(c >> 8) & 7];
+		bytes = cmd_bytes[(c >> 4) & 7];
 		cvt->buf[0] = c;
 		cvt->len = 1;
 		cvt->cmd_bytes = bytes;