On Tue, Aug 20, 2013 at 06:35:53PM +0200, Sebastian Andrzej Siewior wrote: > With enabled pm_runtime in the kernel the device won't work because it > is not "on" during the probe function. This patch enables the device via > pm_runtime on probe so it remains activated. > > Cc: Vinod Koul <vinod.k...@intel.com> > Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de> Acked-by Vinod Koul <vinod.k...@intel.com>
~Vinod > --- > drivers/dma/cppi41.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c > index e696178..6c4e64f 100644 > --- a/drivers/dma/cppi41.c > +++ b/drivers/dma/cppi41.c > @@ -9,6 +9,7 @@ > #include <linux/dmapool.h> > #include <linux/interrupt.h> > #include <linux/of_address.h> > +#include <linux/pm_runtime.h> > #include "dmaengine.h" > > #define DESC_TYPE 27 > @@ -960,6 +961,11 @@ static int cppi41_dma_probe(struct platform_device *pdev) > goto err_remap; > } > > + pm_runtime_enable(&pdev->dev); > + ret = pm_runtime_get_sync(&pdev->dev); > + if (ret) > + goto err_get_sync; > + > cdd->queues_rx = glue_info->queues_rx; > cdd->queues_tx = glue_info->queues_tx; > cdd->td_queue = glue_info->td_queue; > @@ -1005,6 +1011,9 @@ static int cppi41_dma_probe(struct platform_device > *pdev) > err_chans: > deinit_cpii41(pdev, cdd); > err_init_cppi: > + pm_runtime_put(&pdev->dev); > +err_get_sync: > + pm_runtime_disable(&pdev->dev); > iounmap(cdd->usbss_mem); > iounmap(cdd->ctrl_mem); > iounmap(cdd->sched_mem); > @@ -1029,6 +1038,8 @@ static int cppi41_dma_remove(struct platform_device > *pdev) > iounmap(cdd->ctrl_mem); > iounmap(cdd->sched_mem); > iounmap(cdd->qmgr_mem); > + pm_runtime_put(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > kfree(cdd); > return 0; > } > -- > 1.8.4.rc2 > -- -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
