1 files changed, 37 insertions, 12 deletions

diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 4aa5fdc5688e..bccce44421ec 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1621,8 +1621,27 @@ static const struct snd_kcontrol_new snd_ac97_ad1981x_jack_sense[] = {
         AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 12, 1, 0),
 };
 
+/* black list to avoid HP/Line jack-sense controls
+ * (SS vendor << 16 | device)
+ */
+static unsigned int ad1981_jacks_blacklist[] = {
+        0x10140554, /* Thinkpad T42p/R50p */
+        0 /* end */
+};
+
+static int check_list(struct snd_ac97 *ac97, const unsigned int *list)
+{
+        u32 subid = ((u32)ac97->subsystem_vendor << 16) | ac97->subsystem_device;
+        for (; *list; list++)
+                if (*list == subid)
+                        return 1;
+        return 0;
+}
+
 static int patch_ad1981a_specific(struct snd_ac97 * ac97)
 {
+        if (check_list(ac97, ad1981_jacks_blacklist))
+                return 0;
         return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
                                     ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
 }
@@ -1635,22 +1654,26 @@ static struct snd_ac97_build_ops patch_ad1981a_build_ops = {
 #endif
 };
 
+/* white list to enable HP jack-sense bits
+ * (SS vendor << 16 | device)
+ */
+static unsigned int ad1981_jacks_whitelist[] = {
+        0x0e11005a, /* HP nc4000/4010 */
+        0x103c0890, /* HP nc6000 */
+        0x103c0938, /* HP nc4220 */
+        0x103c099c, /* HP nx6110 */
+        0x103c0944, /* HP nc6220 */
+        0x103c0934, /* HP nc8220 */
+        0x103c006d, /* HP nx9105 */
+        0x17340088, /* FSC Scenic-W */
+        0 /* end */
+};
+
 static void check_ad1981_hp_jack_sense(struct snd_ac97 *ac97)
 {
-        u32 subid = ((u32)ac97->subsystem_vendor << 16) | ac97->subsystem_device;
-        switch (subid) {
-        case 0x0e11005a: /* HP nc4000/4010 */
-        case 0x103c0890: /* HP nc6000 */
-        case 0x103c0938: /* HP nc4220 */
-        case 0x103c099c: /* HP nx6110 */
-        case 0x103c0944: /* HP nc6220 */
-        case 0x103c0934: /* HP nc8220 */
-        case 0x103c006d: /* HP nx9105 */
-        case 0x17340088: /* FSC Scenic-W */
+        if (check_list(ac97, ad1981_jacks_whitelist))
                 /* enable headphone jack sense */
                 snd_ac97_update_bits(ac97, AC97_AD_JACK_SPDIF, 1<<11, 1<<11);
-                break;
-        }
 }
 
 int patch_ad1981a(struct snd_ac97 *ac97)
@@ -1672,6 +1695,8 @@ static int patch_ad1981b_specific(struct snd_ac97 *ac97)
 
         if ((err = patch_build_controls(ac97, &snd_ac97_ad198x_2cmic, 1)) < 0)
                 return err;
+        if (check_list(ac97, ad1981_jacks_blacklist))
+                return 0;
         return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
                                     ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
 }