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-rw-r--r--sound/pci/hda/patch_cirrus.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 5b0a9bb343da..ec0518ec9a55 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -976,8 +976,10 @@ static void cs_automic(struct hda_codec *codec)
/* specific to CS421x, single ADC */
if (spec->vendor_nid == CS421X_VENDOR_NID) {
if (present) {
- spec->last_input = spec->cur_input;
- spec->cur_input = spec->automic_idx;
+ if (spec->cur_input != spec->automic_idx) {
+ spec->last_input = spec->cur_input;
+ spec->cur_input = spec->automic_idx;
+ }
} else {
spec->cur_input = spec->last_input;
}