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| author | Takashi Iwai | 2017-08-22 08:15:13 +0200 |
|---|---|---|
| committer | Takashi Iwai | 2017-08-22 15:43:40 +0200 |
| commit | 88c54cdf61f508ebcf8da2d819f5dfc03e954d1d (patch) | |
| tree | ef895c90efc68011841b0bbecc011b8fceb8926c /sound/usb/bcd2000/bcd2000.c | |
| parent | ALSA: usb-audio: Add delay quirk for H650e/Jabra 550a USB headsets (diff) | |
| download | kernel-qcow2-linux-88c54cdf61f508ebcf8da2d819f5dfc03e954d1d.tar.gz kernel-qcow2-linux-88c54cdf61f508ebcf8da2d819f5dfc03e954d1d.tar.xz kernel-qcow2-linux-88c54cdf61f508ebcf8da2d819f5dfc03e954d1d.zip | |
ALSA: core: Fix unexpected error at replacing user TLV
When user tries to replace the user-defined control TLV, the kernel
checks the change of its content via memcmp(). The problem is that
the kernel passes the return value from memcmp() as is. memcmp()
gives a non-zero negative value depending on the comparison result,
and this shall be recognized as an error code.
The patch covers that corner-case, return 1 properly for the changed
TLV.
Fixes: 8aa9b586e420 ("[ALSA] Control API - more robust TLV implementation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/bcd2000/bcd2000.c')
0 files changed, 0 insertions, 0 deletions