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dma: cpp41: enable pm_runtime during init 

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.

Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2013-08-20 18:35:53 +02:00 committed by Felipe Balbi
parent 2ae847a1b1
commit d6aafa2bf3
1 changed files with 11 additions and 0 deletions
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11
drivers/dma/cppi41.c
View File

@ -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 @@ err_irq:
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;
}