ASoC: Intel: Skylake: Request IRQ late only after all context are initialized

Sometimes during boot, panic is observed at sst_dsp_shim_read_unlocked().
This happens when interrupt occurs before the context is initialized. So
move the irq initialization only after the context is initialized
completely.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Pawse, GuruprasadX <guruprasadx.pawse@intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/skylake/bxt-sst.c b/sound/soc/intel/skylake/bxt-sst.c
index 4524211..440bca7 100644 (file)
--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -595,7 +595,7 @@ int bxt_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
        INIT_DELAYED_WORK(&skl->d0i3.work, bxt_set_dsp_D0i3);
        skl->d0i3.state = SKL_DSP_D0I3_NONE;
 
-       return 0;
+       return skl_dsp_acquire_irq(sst);
 }
 EXPORT_SYMBOL_GPL(bxt_sst_dsp_init);
 

diff --git a/sound/soc/intel/skylake/cnl-sst.c b/sound/soc/intel/skylake/cnl-sst.c
index 387de38..245df10 100644 (file)
--- a/sound/soc/intel/skylake/cnl-sst.c
+++ b/sound/soc/intel/skylake/cnl-sst.c
@@ -458,7 +458,7 @@ int cnl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
        cnl->boot_complete = false;
        init_waitqueue_head(&cnl->boot_wait);
 
-       return 0;
+       return skl_dsp_acquire_irq(sst);
 }
 EXPORT_SYMBOL_GPL(cnl_sst_dsp_init);
 

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.c b/sound/soc/intel/skylake/skl-sst-dsp.c
index 19ee1d4..71e31ad 100644 (file)
--- a/sound/soc/intel/skylake/skl-sst-dsp.c
+++ b/sound/soc/intel/skylake/skl-sst-dsp.c
@@ -435,16 +435,22 @@ struct sst_dsp *skl_dsp_ctx_init(struct device *dev,
                        return NULL;
        }
 
+       return sst;
+}
+
+int skl_dsp_acquire_irq(struct sst_dsp *sst)
+{
+       struct sst_dsp_device *sst_dev = sst->sst_dev;
+       int ret;
+
        /* Register the ISR */
        ret = request_threaded_irq(sst->irq, sst->ops->irq_handler,
                sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
-       if (ret) {
+       if (ret)
                dev_err(sst->dev, "unable to grab threaded IRQ %d, disabling device\n",
                               sst->irq);
-               return NULL;
-       }
 
-       return sst;
+       return ret;
 }
 
 void skl_dsp_free(struct sst_dsp *dsp)

diff --git a/sound/soc/intel/skylake/skl-sst-dsp.h b/sound/soc/intel/skylake/skl-sst-dsp.h
index b8e799e..12fc9a7 100644 (file)
--- a/sound/soc/intel/skylake/skl-sst-dsp.h
+++ b/sound/soc/intel/skylake/skl-sst-dsp.h
@@ -206,6 +206,7 @@ int skl_cldma_wait_interruptible(struct sst_dsp *ctx);
 void skl_dsp_set_state_locked(struct sst_dsp *ctx, int state);
 struct sst_dsp *skl_dsp_ctx_init(struct device *dev,
                struct sst_dsp_device *sst_dev, int irq);
+int skl_dsp_acquire_irq(struct sst_dsp *sst);
 bool is_skl_dsp_running(struct sst_dsp *ctx);
 
 unsigned int skl_dsp_get_enabled_cores(struct sst_dsp *ctx);

diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c
index a436abf..5a7e41b 100644 (file)
--- a/sound/soc/intel/skylake/skl-sst.c
+++ b/sound/soc/intel/skylake/skl-sst.c
@@ -569,7 +569,7 @@ int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 
        sst->fw_ops = skl_fw_ops;
 
-       return 0;
+       return skl_dsp_acquire_irq(sst);
 }
 EXPORT_SYMBOL_GPL(skl_sst_dsp_init);