From: Takashi Iwai Date: Tue, 22 Aug 2017 06:15:13 +0000 (+0200) Subject: ALSA: core: Fix unexpected error at replacing user TLV X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5bb5cc4ec4fa756070edf5e851fa9607dbf6d3a8;p=pandora-kernel.git ALSA: core: Fix unexpected error at replacing user TLV commit 88c54cdf61f508ebcf8da2d819f5dfc03e954d1d upstream. 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") Signed-off-by: Takashi Iwai Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed