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Subject[PATCH 1/2] DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove
Date
amba_probe() now calls pm_runtime_get_noresume() and pm_runtime_enable()
for the devices before the device probe is called. Hence we don't need
to call pm_runtime_get_xxx and pm_runtime_enable() in device probe again.
In the same way, since amba_remove() calls the respective pm_runtime
functions, those functions need not be called from device remove.

This patch fixes following run time error with pl330 driver.

dma-pl330 dma-pl330.0: Unbalanced pm_runtime_enable!
dma-pl330 dma-pl330.0: failed to get runtime pm

Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
---
drivers/dma/pl330.c | 17 ++---------------
1 files changed, 2 insertions(+), 15 deletions(-)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index a626e15..cd07121 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -834,17 +834,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)

amba_set_drvdata(adev, pdmac);

-#ifdef CONFIG_PM_RUNTIME
- /* to use the runtime PM helper functions */
- pm_runtime_enable(&adev->dev);
-
- /* enable the power domain */
- if (pm_runtime_get_sync(&adev->dev)) {
- dev_err(&adev->dev, "failed to get runtime pm\n");
- ret = -ENODEV;
- goto probe_err1;
- }
-#else
+#ifndef CONFIG_PM_RUNTIME
/* enable dma clk */
clk_enable(pdmac->clk);
#endif
@@ -977,10 +967,7 @@ static int __devexit pl330_remove(struct amba_device *adev)
res = &adev->res;
release_mem_region(res->start, resource_size(res));

-#ifdef CONFIG_PM_RUNTIME
- pm_runtime_put(&adev->dev);
- pm_runtime_disable(&adev->dev);
-#else
+#ifndef CONFIG_PM_RUNTIME
clk_disable(pdmac->clk);
#endif

--
1.7.4.1


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