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authorJulian Anastasov <ja@ssi.bg>2009-11-06 23:44:53 +0200
committerTakashi Iwai <tiwai@suse.de>2009-11-07 09:46:06 +0100
commitf495088210c8b9e20791d995a8210170c68d2deb (patch)
tree4f18e905dd9a21400d9327c9f79847afa7a95535 /sound/usb/usbaudio.h
parent70edc800a39327174d3244f9226ce8cacd01dc91 (diff)
downloadlinux-f495088210c8b9e20791d995a8210170c68d2deb.tar.bz2
ALSA: usb-audio: fix combine_word problem
Fix combine_word problem where first octet is not read properly. The only affected place seems to be the INPUT_TERMINAL type. Before now, sound controls can be created with the output terminal's name which is a fallback mechanism used only for unknown input terminal types. For example, Line can wrongly appear as Speaker. After the change it should appear as Line. The side effect of this change can be that users can expect the wrong control name in their scripts or programs while now we return the correct one. Probably, these defines should use get_unaligned_le16 and friends. Signed-off-by: Julian Anastasov <ja@ssi.bg> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.h')
-rw-r--r--sound/usb/usbaudio.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 8e7f78941ba6..e9a3a9dca15c 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -210,7 +210,7 @@ struct snd_usb_midi_endpoint_info {
/*
*/
-#define combine_word(s) ((*s) | ((unsigned int)(s)[1] << 8))
+#define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))