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authorPaolo Bonzini <pbonzini@redhat.com>2016-03-09 11:50:42 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2016-03-09 11:50:42 +0100
commitab92f30875a7ec3e84644a5494febd8901e66742 (patch)
tree5254eb36b20b0d1c584c15d0bf3d6a5a9c1bb451 /sound/hda
parentbb9eadf0c35f2e7eb5ca6468f46ebb7473b85537 (diff)
parentb40c4892d175874d118860c8282a85ee7b64bcbb (diff)
Merge tag 'kvm-arm-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/ARM updates for 4.6 - VHE support so that we can run the kernel at EL2 on ARMv8.1 systems - PMU support for guests - 32bit world switch rewritten in C - Various optimizations to the vgic save/restore code Conflicts: include/uapi/linux/kvm.h
Diffstat (limited to 'sound/hda')
-rw-r--r--sound/hda/hdac_controller.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index b5a17cb510a0..8c486235c905 100644
--- a/sound/hda/hdac_controller.c
+++ b/sound/hda/hdac_controller.c
@@ -426,18 +426,22 @@ EXPORT_SYMBOL_GPL(snd_hdac_bus_stop_chip);
* @bus: HD-audio core bus
* @status: INTSTS register value
* @ask: callback to be called for woken streams
+ *
+ * Returns the bits of handled streams, or zero if no stream is handled.
*/
-void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
+int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
void (*ack)(struct hdac_bus *,
struct hdac_stream *))
{
struct hdac_stream *azx_dev;
u8 sd_status;
+ int handled = 0;
list_for_each_entry(azx_dev, &bus->stream_list, list) {
if (status & azx_dev->sd_int_sta_mask) {
sd_status = snd_hdac_stream_readb(azx_dev, SD_STS);
snd_hdac_stream_writeb(azx_dev, SD_STS, SD_INT_MASK);
+ handled |= 1 << azx_dev->index;
if (!azx_dev->substream || !azx_dev->running ||
!(sd_status & SD_INT_COMPLETE))
continue;
@@ -445,6 +449,7 @@ void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
ack(bus, azx_dev);
}
}
+ return handled;
}
EXPORT_SYMBOL_GPL(snd_hdac_bus_handle_stream_irq);