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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-10-01 19:52:40 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-01 19:52:40 +0200
commitaaf675f53a7176475f69595827248c8b2556ea8c (patch)
tree0cb744dec714328c9f89bf85553fb7195107e5d4 /sound/usb/pcm.c
parenttda1004x: Lock I2C bus during firmware load (diff)
parentLinux 3.6 (diff)
downloadlinux-aaf675f53a7176475f69595827248c8b2556ea8c.tar.xz
linux-aaf675f53a7176475f69595827248c8b2556ea8c.zip
Merge tag 'v3.6' into staging/for_v3.7
Linux 3.6 * tag 'v3.6': (562 commits) Linux 3.6 vfs: dcache: fix deadlock in tree traversal mtdchar: fix offset overflow detection thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy iommu/amd: Fix wrong assumption in iommu-group specific code netdev: octeon: fix return value check in octeon_mgmt_init_phy() ALSA: snd-usb: fix next_packet_size calls for pause case inetpeer: fix token initialization qlcnic: Fix scheduling while atomic bug bnx2: Clean up remaining iounmap trivial select_parent documentation fix net: phy: smsc: Implement PHY config_init for LAN87xx smsc75xx: fix resume after device reset um: Preinclude include/linux/kern_levels.h um: Fix IPC on um netdev: pasemi: fix return value check in pasemi_mac_phy_init() team: fix return value check l2tp: fix return value check USB: Fix race condition when removing host controllers USB: ohci-at91: fix null pointer in ohci_hcd_at91_overcurrent_irq ...
Diffstat (limited to 'sound/usb/pcm.c')
-rw-r--r--sound/usb/pcm.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index fd5e982fc98c..f782ce19bf5a 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -1140,6 +1140,12 @@ static void retire_playback_urb(struct snd_usb_substream *subs,
int processed = urb->transfer_buffer_length / stride;
int est_delay;
+ /* ignore the delay accounting when procssed=0 is given, i.e.
+ * silent payloads are procssed before handling the actual data
+ */
+ if (!processed)
+ return;
+
spin_lock_irqsave(&subs->lock, flags);
est_delay = snd_usb_pcm_delay(subs, runtime->rate);
/* update delay with exact number of samples played */