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usb: atmel_usba_udc: fix it to deal with final dma channel

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As, the interrupt for DMA is counted from 1, so need to checked
the USBA_NR_DMAS, in old way, it only check (USBA_NR_DMAS - 1),
so fix it.

Reported-by: Max Liao <liaops@embest-tech.com>
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Bo Shen
2014-08-07 11:43:07 +08:00
committed by Felipe Balbi
parent 20e7d4653d
commit bcabdc24df
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/atmel_usba_udc.c
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@@ -1661,7 +1661,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
if (dma_status) {
int i;
for (i = 1; i < USBA_NR_DMAS; i++)
for (i = 1; i <= USBA_NR_DMAS; i++)
if (dma_status & (1 << i))
usba_dma_irq(udc, &udc->usba_ep[i]);
}