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dmaengine: cppi41: Fix list not empty warning on module removal

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If musb controller is configured with USB peripherals and we have
enumerated with a USB host, we can get warnings on removal of the
modules:

WARNING: CPU: 0 PID: 1269 at drivers/dma/cppi41.c:391
cppi41_dma_free_chan_resources

Fix the issue by adding the missing pm_runtime_get to
cppi41_dma_free_chan_resources to make sure the pending work
list is cleared on removal.

Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Tony Lindgren 2016-11-09 09:47:58 -07:00 committed by Vinod Koul
parent f732c5b7c7
commit 12f5908080
1 changed files with 5 additions and 0 deletions
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5
drivers/dma/cppi41.c
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@ -1072,7 +1072,12 @@ err_get_sync:
static int cppi41_dma_remove(struct platform_device *pdev)
{
struct cppi41_dd *cdd = platform_get_drvdata(pdev);
int error;
error = pm_runtime_get_sync(&pdev->dev);
if (error < 0)
dev_err(&pdev->dev, "%s could not pm_runtime_get: %i\n",
__func__, error);
of_dma_controller_free(pdev->dev.of_node);
dma_async_device_unregister(&cdd->ddev);