Add patch to fix USB audio regression (rhbz 851619)
This commit is contained in:
Josh Boyer
parent
9745498bee
commit
a3b7bc1c15
131
0001-ALSA-snd-usb-Fix-URB-cancellation-at-stream-start.patch
Normal file
131
0001-ALSA-snd-usb-Fix-URB-cancellation-at-stream-start.patch
Normal file
@ -0,0 +1,131 @@
|
|||||||
|
From 42ff3e2d34427dc4c6faa09052a2531f2e71d7d6 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Daniel Mack <zonque@gmail.com>
|
||||||
|
Date: Wed, 29 Aug 2012 13:17:05 +0200
|
||||||
|
Subject: [PATCH] ALSA: snd-usb: Fix URB cancellation at stream start
|
||||||
|
|
||||||
|
Commit e9ba389c5 ("ALSA: usb-audio: Fix scheduling-while-atomic bug in
|
||||||
|
PCM capture stream") fixed a scheduling-while-atomic bug that happened
|
||||||
|
when snd_usb_endpoint_start was called from the trigger callback, which
|
||||||
|
is an atmic context. However, the patch breaks the idea of the endpoints
|
||||||
|
reference counting, which is the reason why the driver has been
|
||||||
|
refactored lately.
|
||||||
|
|
||||||
|
Revert that commit and let snd_usb_endpoint_start() take care of the URB
|
||||||
|
cancellation again. As this function is called from both atomic and
|
||||||
|
non-atomic context, add a flag to denote whether the function may sleep.
|
||||||
|
|
||||||
|
Signed-off-by: Daniel Mack <zonque@gmail.com>
|
||||||
|
Cc: stable@kernel.org [3.5+]
|
||||||
|
---
|
||||||
|
sound/usb/endpoint.c | 11 +++++++++--
|
||||||
|
sound/usb/endpoint.h | 2 +-
|
||||||
|
sound/usb/pcm.c | 13 +++++--------
|
||||||
|
3 files changed, 15 insertions(+), 11 deletions(-)
|
||||||
|
|
||||||
|
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
|
||||||
|
index c411812..b896c55 100644
|
||||||
|
--- a/sound/usb/endpoint.c
|
||||||
|
+++ b/sound/usb/endpoint.c
|
||||||
|
@@ -799,7 +799,9 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
|
||||||
|
/**
|
||||||
|
* snd_usb_endpoint_start: start an snd_usb_endpoint
|
||||||
|
*
|
||||||
|
- * @ep: the endpoint to start
|
||||||
|
+ * @ep: the endpoint to start
|
||||||
|
+ * @can_sleep: flag indicating whether the operation is executed in
|
||||||
|
+ * non-atomic context
|
||||||
|
*
|
||||||
|
* A call to this function will increment the use count of the endpoint.
|
||||||
|
* In case it is not already running, the URBs for this endpoint will be
|
||||||
|
@@ -809,7 +811,7 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
|
||||||
|
*
|
||||||
|
* Returns an error if the URB submission failed, 0 in all other cases.
|
||||||
|
*/
|
||||||
|
-int snd_usb_endpoint_start(struct snd_usb_endpoint *ep)
|
||||||
|
+int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep)
|
||||||
|
{
|
||||||
|
int err;
|
||||||
|
unsigned int i;
|
||||||
|
@@ -821,6 +823,11 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep)
|
||||||
|
if (++ep->use_count != 1)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
+ /* just to be sure */
|
||||||
|
+ deactivate_urbs(ep, 0, can_sleep);
|
||||||
|
+ if (can_sleep)
|
||||||
|
+ wait_clear_urbs(ep);
|
||||||
|
+
|
||||||
|
ep->active_mask = 0;
|
||||||
|
ep->unlink_mask = 0;
|
||||||
|
ep->phase = 0;
|
||||||
|
diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h
|
||||||
|
index ee2723f..a8e60c1 100644
|
||||||
|
--- a/sound/usb/endpoint.h
|
||||||
|
+++ b/sound/usb/endpoint.h
|
||||||
|
@@ -13,7 +13,7 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
|
||||||
|
struct audioformat *fmt,
|
||||||
|
struct snd_usb_endpoint *sync_ep);
|
||||||
|
|
||||||
|
-int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
|
||||||
|
+int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep);
|
||||||
|
void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
|
||||||
|
int force, int can_sleep, int wait);
|
||||||
|
int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
|
||||||
|
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
|
||||||
|
index 62ec808..1546577 100644
|
||||||
|
--- a/sound/usb/pcm.c
|
||||||
|
+++ b/sound/usb/pcm.c
|
||||||
|
@@ -212,7 +212,7 @@ int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
-static int start_endpoints(struct snd_usb_substream *subs)
|
||||||
|
+static int start_endpoints(struct snd_usb_substream *subs, int can_sleep)
|
||||||
|
{
|
||||||
|
int err;
|
||||||
|
|
||||||
|
@@ -225,7 +225,7 @@ static int start_endpoints(struct snd_usb_substream *subs)
|
||||||
|
snd_printdd(KERN_DEBUG "Starting data EP @%p\n", ep);
|
||||||
|
|
||||||
|
ep->data_subs = subs;
|
||||||
|
- err = snd_usb_endpoint_start(ep);
|
||||||
|
+ err = snd_usb_endpoint_start(ep, can_sleep);
|
||||||
|
if (err < 0) {
|
||||||
|
clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags);
|
||||||
|
return err;
|
||||||
|
@@ -239,7 +239,7 @@ static int start_endpoints(struct snd_usb_substream *subs)
|
||||||
|
snd_printdd(KERN_DEBUG "Starting sync EP @%p\n", ep);
|
||||||
|
|
||||||
|
ep->sync_slave = subs->data_endpoint;
|
||||||
|
- err = snd_usb_endpoint_start(ep);
|
||||||
|
+ err = snd_usb_endpoint_start(ep, can_sleep);
|
||||||
|
if (err < 0) {
|
||||||
|
clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags);
|
||||||
|
return err;
|
||||||
|
@@ -544,13 +544,10 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
|
||||||
|
subs->last_frame_number = 0;
|
||||||
|
runtime->delay = 0;
|
||||||
|
|
||||||
|
- /* clear the pending deactivation on the target EPs */
|
||||||
|
- deactivate_endpoints(subs);
|
||||||
|
-
|
||||||
|
/* for playback, submit the URBs now; otherwise, the first hwptr_done
|
||||||
|
* updates for all URBs would happen at the same time when starting */
|
||||||
|
if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK)
|
||||||
|
- return start_endpoints(subs);
|
||||||
|
+ return start_endpoints(subs, 1);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
@@ -1175,7 +1172,7 @@ static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream
|
||||||
|
|
||||||
|
switch (cmd) {
|
||||||
|
case SNDRV_PCM_TRIGGER_START:
|
||||||
|
- err = start_endpoints(subs);
|
||||||
|
+ err = start_endpoints(subs, 0);
|
||||||
|
if (err < 0)
|
||||||
|
return err;
|
||||||
|
|
||||||
|
--
|
||||||
|
1.7.11.4
|
||||||
|
|
||||||
@ -62,7 +62,7 @@ Summary: The Linux kernel
|
|||||||
# For non-released -rc kernels, this will be appended after the rcX and
|
# For non-released -rc kernels, this will be appended after the rcX and
|
||||||
# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
|
# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
|
||||||
#
|
#
|
||||||
%global baserelease 1
|
%global baserelease 2
|
||||||
%global fedora_build %{baserelease}
|
%global fedora_build %{baserelease}
|
||||||
|
|
||||||
# base_sublevel is the kernel version we're starting with and patching
|
# base_sublevel is the kernel version we're starting with and patching
|
||||||
@ -753,6 +753,8 @@ Patch22066: virtio-scsi-Initialize-scatterlist-structure.patch
|
|||||||
#rhbz 846037
|
#rhbz 846037
|
||||||
Patch22067: selinux-Fix-sel_netnode_insert-suspicious-rcu-dereference.patch
|
Patch22067: selinux-Fix-sel_netnode_insert-suspicious-rcu-dereference.patch
|
||||||
|
|
||||||
|
Patch30000: 0001-ALSA-snd-usb-Fix-URB-cancellation-at-stream-start.patch
|
||||||
|
|
||||||
# END OF PATCH DEFINITIONS
|
# END OF PATCH DEFINITIONS
|
||||||
|
|
||||||
%endif
|
%endif
|
||||||
@ -1449,6 +1451,8 @@ ApplyPatch virtio-scsi-Initialize-scatterlist-structure.patch
|
|||||||
#rhbz 846037
|
#rhbz 846037
|
||||||
ApplyPatch selinux-Fix-sel_netnode_insert-suspicious-rcu-dereference.patch
|
ApplyPatch selinux-Fix-sel_netnode_insert-suspicious-rcu-dereference.patch
|
||||||
|
|
||||||
|
ApplyPatch 0001-ALSA-snd-usb-Fix-URB-cancellation-at-stream-start.patch
|
||||||
|
|
||||||
# END OF PATCH APPLICATIONS
|
# END OF PATCH APPLICATIONS
|
||||||
|
|
||||||
%endif
|
%endif
|
||||||
@ -2311,6 +2315,9 @@ fi
|
|||||||
# ||----w |
|
# ||----w |
|
||||||
# || ||
|
# || ||
|
||||||
%changelog
|
%changelog
|
||||||
|
* Wed Aug 29 2012 Josh Boyer <jwboyer@redhat.com> - 3.6.0-0.rc3.git3.2
|
||||||
|
- Add patch to fix USB audio regression (rhbz 851619)
|
||||||
|
|
||||||
* Wed Aug 29 2012 Josh Boyer <jwboyer@redhat.com> - 3.6.0-0.rc3.git3.1
|
* Wed Aug 29 2012 Josh Boyer <jwboyer@redhat.com> - 3.6.0-0.rc3.git3.1
|
||||||
- Linux v3.6-rc3-207-g318e151
|
- Linux v3.6-rc3-207-g318e151
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user