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usb: gadget: udc: renesas_usb3: fix free size in renesas_usb3_dma_free_prd() 

The commit 2d4aa21a73 ("usb: gadget: udc: renesas_usb3: add support
for dedicated DMAC") has a bug in the renesas_usb3_dma_free_prd().
The size of dma_free_coherent() should be the same with dma_alloc_coherent()
Otherwise, this code causes a WARNING by mm/page_alloc.c when
renesas_usb3_dma_free_prd() is called. So, this patch fixes it.

Fixes: 2d4aa21a73 ("usb: gadget: udc: renesas_usb3: add support for dedicated DMAC")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Yoshihiro Shimoda 2017-07-18 21:26:40 +09:00 committed by Felipe Balbi
parent 14e1d56cbe
commit 80584efcc6
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/renesas_usb3.c
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@ -1369,7 +1369,7 @@ static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3,
usb3_for_each_dma(usb3, dma, i) {
if (dma->prd) {
dma_free_coherent(dev, USB3_DMA_MAX_XFER_SIZE,
dma_free_coherent(dev, USB3_DMA_PRD_SIZE,
dma->prd, dma->prd_dma);
dma->prd = NULL;
}