Commit f718c2ef authored by Vineet Gupta's avatar Vineet Gupta
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ARC: Don't memzero twice in dma_alloc_coherent for __GFP_ZERO 



alloc_pages_exact() get gfp flags and handle zero'ing already

And while it, fix the case where ioremap fails: return rightaway.

Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent 97709069

arch/arc/mm/dma.c

+2 −2
Original line number Diff line number Diff line
@@ -60,8 +60,8 @@ void *dma_alloc_coherent(struct device *dev, size_t size, 


	/* This is kernel Virtual address (0x7000_0000 based) */

	kvaddr = ioremap_nocache((unsigned long)paddr, size);

	if (kvaddr != NULL)

		memset(kvaddr, 0, size);

	if (kvaddr == NULL)

		return NULL;



	/* This is bus address, platform dependent */

	*dma_handle = (dma_addr_t)paddr;