Commits
Kangjie Lu committed 6ade657d612
ALSA: echoaudio: add a check for ioremap_nocache In case ioremap_nocache fails, the fix releases chip and returns an error code upstream to avoid NULL pointer dereference. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>