[PATCH 04/23] intel_sst: ignore IRQ when suspended

Alan Cox
2011-05-03T16:52:56Z

From: Vinod Koul <vinod.koul@intel.com>

The irq for audio is shared, so when device is supended driver should
not the read register and ignore the interrupt.

This patch ignores interrupts when device is suspended.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
---

drivers/staging/intel_sst/intel_sst.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/intel_sst/intel_sst.c b/drivers/staging/intel_sst/intel_sst.c
index c40e00a..e7c2617 100644
--- a/drivers/staging/intel_sst/intel_sst.c
+++ b/drivers/staging/intel_sst/intel_sst.c
@@ -107,6 +107,9 @@ static irqreturn_t intel_sst_interrupt(int irq, void *context)
unsigned int size = 0, str_id;
struct stream_info *stream ;

+ /* Do not handle interrupt in suspended state */
+ if (drv->sst_state == SST_SUSPENDED)
+ return IRQ_NONE;
/* Interrupt arrived, check src */
isr.full = sst_shim_read(drv->shim, SST_ISRX);