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authorColin Ian King <colin.king@canonical.com>2021-03-18 13:20:08 +0000
committerTakashi Iwai <tiwai@suse.de>2021-03-18 14:25:13 +0100
commit50b1affc891cbc103a2334ce909a026e25f4c84d (patch)
treecc54ff2b8d372402beee2fbd11b18e31fc963f00 /sound/pci
parentf4df9ee6d7f329d32d756e54f78c084c7e509b24 (diff)
downloadlinux-50b1affc891cbc103a2334ce909a026e25f4c84d.tar.gz
ALSA: usb-audio: Fix unintentional sign extension issue
The shifting of the u8 integer device by 24 bits to the left will be promoted to a 32 bit signed int and then sign-extended to a 64 bit unsigned long. In the event that the top bit of device is set then all then all the upper 32 bits of the unsigned long will end up as also being set because of the sign-extension. Fix this by casting device to an unsigned long before the shift. Addresses-Coverity: ("Unintended sign extension") Fixes: a07df82c7990 ("ALSA: usb-audio: Add DJM750 to Pioneer mixer quirk") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20210318132008.15266-1-colin.king@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
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