From 26af13f15ab281c9e20f8027bc556111644662ae Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Fri, 8 Jul 2011 09:59:26 +0100 Subject: sst: avoid unnecessary firmware reloading for MRST SST HW on MRST doesn't need to reload the firmware during suspend/resume cycle, so remove the extra workload. This also fix a bug that the firmware sample rate can't be modified when there is no active playback/capture stream. Signed-off-by: Feng Tang Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/staging/intel_sst/intel_sst.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/staging/intel_sst/intel_sst.c') diff --git a/drivers/staging/intel_sst/intel_sst.c b/drivers/staging/intel_sst/intel_sst.c index c0c144a..d892861 100644 --- a/drivers/staging/intel_sst/intel_sst.c +++ b/drivers/staging/intel_sst/intel_sst.c @@ -545,7 +545,10 @@ static int intel_sst_runtime_suspend(struct device *dev) /* Move the SST state to Suspended */ mutex_lock(&sst_drv_ctx->sst_lock); sst_drv_ctx->sst_state = SST_SUSPENDED; - sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); + + /* Only needed by Medfield */ + if (sst_drv_ctx->pci_id != SST_MRST_PCI_ID) + sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); mutex_unlock(&sst_drv_ctx->sst_lock); return 0; } -- cgit v1.1