4.11-stable patches

added patches:
	rt286-add-thinkpad-helix-2-to-force_combo_jack_table.patch

diff --git a/queue-4.11/rt286-add-thinkpad-helix-2-to-force_combo_jack_table.patch b/queue-4.11/rt286-add-thinkpad-helix-2-to-force_combo_jack_table.patch
new file mode 100644 (file)
index 0000000..74cc165
--- /dev/null
+++ b/queue-4.11/rt286-add-thinkpad-helix-2-to-force_combo_jack_table.patch
@@ -0,0 +1,52 @@
+From fe0dfd6358a17c79bd7d6996af7512ba452a7059 Mon Sep 17 00:00:00 2001
+From: Yifeng Li <tomli@tomli.me>
+Date: Thu, 4 May 2017 01:34:14 +0800
+Subject: rt286: add Thinkpad Helix 2 to force_combo_jack_table
+
+From: Yifeng Li <tomli@tomli.me>
+
+commit fe0dfd6358a17c79bd7d6996af7512ba452a7059 upstream.
+
+Thinkpad Helix 2 is a tablet PC, the audio is powered by Core M
+broadwell-audio and rt286 codec. For all versions of Linux kernel,
+the stereo output doesn't work properly when earphones are plugged
+in, the sound was coming out from both channels even if the audio
+contains only the left or right channel. Furthermore, if a music
+recorded in stereo is played, the two channels cancle out each other
+out, as a result, no voice but only distorted background music can be
+heard, like a sound card with builtin a Karaoke sount effect.
+
+Apparently this tablet uses a combo jack with polarity incorrectly
+set by rt286 driver. This patch adds DMI information of Thinkpad Helix 2
+to force_combo_jack_table[] and the issue is resolved. The microphone
+input doesn't work regardless to the presence of this patch and still
+needs help from other developers to investigate.
+
+This is my first patch to LKML directly, sorry for CC-ing too many
+people here.
+
+Link: https://bugzilla.kernel.org/show_bug.cgi?id=93841
+Signed-off-by: Yifeng Li <tomli@tomli.me>
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ sound/soc/codecs/rt286.c |    7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/sound/soc/codecs/rt286.c
++++ b/sound/soc/codecs/rt286.c
+@@ -1108,6 +1108,13 @@ static const struct dmi_system_id force_
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Kabylake Client platform")
+               }
+       },
++      {
++              .ident = "Thinkpad Helix 2nd",
++              .matches = {
++                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
++                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix 2nd")
++              }
++      },
+ 
+       { }
+ };

diff --git a/queue-4.11/series b/queue-4.11/series
index ca0198f80690e56adde612f37add0a600259b328..f972239a1ef304913dae175aeb59459db46eacc5 100644 (file)
--- a/queue-4.11/series
+++ b/queue-4.11/series
@@ -33,3 +33,4 @@ tpm-fix-a-kernel-memory-leak-in-tpm-sysfs.c.patch
 x86-uaccess-optimize-copy_user_enhanced_fast_string-for-short-strings.patch
 xen-avoid-deadlock-in-xenbus-driver.patch
 crypto-drbg-fixes-panic-in-wait_for_completion-call.patch
+rt286-add-thinkpad-helix-2-to-force_combo_jack_table.patch