4.9-stable patches

added patches:
	alsa-usb-audio-fix-invalid-null-check-in-snd_emuusb_set_samplerate.patch

diff --git a/queue-4.9/alsa-usb-audio-fix-invalid-null-check-in-snd_emuusb_set_samplerate.patch b/queue-4.9/alsa-usb-audio-fix-invalid-null-check-in-snd_emuusb_set_samplerate.patch
new file mode 100644 (file)
index 0000000..7f7a169
--- /dev/null
+++ b/queue-4.9/alsa-usb-audio-fix-invalid-null-check-in-snd_emuusb_set_samplerate.patch
@@ -0,0 +1,53 @@
+From 6de3c9e3f6b3eaf66859e1379b3f35dda781416b Mon Sep 17 00:00:00 2001
+From: Takashi Iwai <tiwai@suse.de>
+Date: Thu, 15 Aug 2019 11:41:06 +0200
+Subject: ALSA: usb-audio: Fix invalid NULL check in snd_emuusb_set_samplerate()
+
+From: Takashi Iwai <tiwai@suse.de>
+
+commit 6de3c9e3f6b3eaf66859e1379b3f35dda781416b upstream.
+
+The quirk function snd_emuusb_set_samplerate() has a NULL check for
+the mixer element, but this is useless in the current code.  It used
+to be a check against mixer->id_elems[unitid] but it was changed later
+to the value after mixer_eleme_list_to_info() which is always non-NULL
+due to the container_of() usage.
+
+This patch fixes the check before the conversion.
+
+While we're at it, correct a typo in the comment in the function,
+too.
+
+Fixes: 8c558076c740 ("ALSA: usb-audio: Clean up mixer element list traverse")
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ sound/usb/mixer_quirks.c |    8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/sound/usb/mixer_quirks.c
++++ b/sound/usb/mixer_quirks.c
+@@ -1168,17 +1168,17 @@ void snd_emuusb_set_samplerate(struct sn
+ {
+       struct usb_mixer_interface *mixer;
+       struct usb_mixer_elem_info *cval;
+-      int unitid = 12; /* SamleRate ExtensionUnit ID */
++      int unitid = 12; /* SampleRate ExtensionUnit ID */
+ 
+       list_for_each_entry(mixer, &chip->mixer_list, list) {
+-              cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
+-              if (cval) {
++              if (mixer->id_elems[unitid]) {
++                      cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
+                       snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
+                                                   cval->control << 8,
+                                                   samplerate_id);
+                       snd_usb_mixer_notify_id(mixer, unitid);
++                      break;
+               }
+-              break;
+       }
+ }
+ 

diff --git a/queue-4.9/series b/queue-4.9/series
index 6a0d44c2f44262a163ba65c0b2a98dcaa7253ef0..7faea508686ce2dda12ead3fc5d7aaf2801cccfe 100644 (file)
--- a/queue-4.9/series
+++ b/queue-4.9/series
@@ -186,3 +186,4 @@ sunrpc-fixed-rollback-in-rpc_gssd_dummy_populate.patch
 sunrpc-properly-set-the-subbuf-parameter-of-xdr_buf_subsegment.patch
 pnfs-flexfiles-fix-list-corruption-if-the-mirror-count-changes.patch
 nfsv4-fix-close-not-waiting-for-direct-io-compeletion.patch
+alsa-usb-audio-fix-invalid-null-check-in-snd_emuusb_set_samplerate.patch