Commit 12381dc0 authored Jul 15, 2013 by Andy Shevchenko Committed by Vinod Koul Aug 05, 2013

dma: dw: return DMA_SUCCESS immediately from device_tx_status()



There is no point to go throught the rest of the function if first call to
dma_cookie_status() returned DMA_SUCCESS.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent 3783cef8

drivers/dma/dw/core.c

+4 −4

Original line number	Diff line number	Diff line
		@@ -1098,12 +1098,12 @@ dwc_tx_status(struct dma_chan *chan,
		enum dma_status ret;

		ret = dma_cookie_status(chan, cookie, txstate);
		if (ret != DMA_SUCCESS) {
		if (ret == DMA_SUCCESS)
		return ret;

		dwc_scan_descriptors(to_dw_dma(chan->device), dwc);

		ret = dma_cookie_status(chan, cookie, txstate);
		}

		if (ret != DMA_SUCCESS)
		dma_set_residue(txstate, dwc_get_residue(dwc));