[RFC patch resend] DMAengine/Langwell: put dev object in error path

[Hillf Danton]

When allocating resources for DMA channel, if error encountered, the dev object
of the relevant DMA device should be put, corresponding to the get operation.

Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---

--- a/drivers/dma/intel_mid_dma.c	Sat Aug 13 11:44:46 2011
+++ intel_mid_dma.c	Sat Aug 13 12:39:53 2011
@@ -871,6 +871,7 @@ static int intel_mid_dma_alloc_chan_reso
 	if (mid->state == SUSPENDED) {
 		if (dma_resume(mid->pdev)) {
 			pr_err("ERR_MDMA: resume failed");
+			pm_runtime_put(&mid->pdev->dev);
 			return -EFAULT;
 		}
 	}
--
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