linux-kernel - [GIT PULL] sound fixes for 5.3-rc3

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Date:   Fri, 02 Aug 2019 11:38:08 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] sound fixes for 5.3-rc3

Linus,

please pull sound fixes for v5.3-rc3 from:

  git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git tags/sound-5.3-rc3

The topmost commit is 5d78e1c2b7f4be00bbe62141603a631dc7812f35

----------------------------------------------------------------

sound fixes for 5.3-rc3

- A further fix for syzcaller issues with USB-audio, addressing
  NULL dereference that was introduced by the recent fix
- Avoid a long delay at boot with HD-audio when i915 module was
  built but not installed, found on some Debian systems
- A fix of small race window at PCM draining

----------------------------------------------------------------

Hillf Danton (1):
      ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check

Samuel Thibault (1):
      ALSA: hda: Fix 1-minute detection delay when i915 module is not available

Yuki Tsunashima (1):
      ALSA: pcm: fix lost wakeup event scenarios in snd_pcm_drain

---
 sound/core/pcm_native.c |  3 ++-
 sound/hda/hdac_i915.c   | 10 ++++++----
 sound/usb/helper.c      |  2 +-
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 12dd9b318db1..703857aab00f 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1873,6 +1873,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
 		if (!to_check)
 			break; /* all drained */
 		init_waitqueue_entry(&wait, current);
+		set_current_state(TASK_INTERRUPTIBLE);
 		add_wait_queue(&to_check->sleep, &wait);
 		snd_pcm_stream_unlock_irq(substream);
 		if (runtime->no_period_wakeup)
@@ -1885,7 +1886,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
 			}
 			tout = msecs_to_jiffies(tout * 1000);
 		}
-		tout = schedule_timeout_interruptible(tout);
+		tout = schedule_timeout(tout);
 
 		snd_pcm_stream_lock_irq(substream);
 		group = snd_pcm_stream_group_ref(substream);
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index 1192c7561d62..3c2db3816029 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -136,10 +136,12 @@ int snd_hdac_i915_init(struct hdac_bus *bus)
 	if (!acomp)
 		return -ENODEV;
 	if (!acomp->ops) {
-		request_module("i915");
-		/* 60s timeout */
-		wait_for_completion_timeout(&bind_complete,
-					    msecs_to_jiffies(60 * 1000));
+		if (!IS_ENABLED(CONFIG_MODULES) ||
+		    !request_module("i915")) {
+			/* 60s timeout */
+			wait_for_completion_timeout(&bind_complete,
+						   msecs_to_jiffies(60 * 1000));
+		}
 	}
 	if (!acomp->ops) {
 		dev_info(bus->dev, "couldn't bind with audio component\n");
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index 71d5f540334a..4c12cc5b53fd 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -72,7 +72,7 @@ int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe)
 	struct usb_host_endpoint *ep;
 
 	ep = usb_pipe_endpoint(dev, pipe);
-	if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+	if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
 		return -EINVAL;
 	return 0;
 }