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usb: gadget: bdc: fix a driver crash on disconnect

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ep_dequeue() in bdc_ep.c was capturing the hw dequeue pointer
incorrectly by reading the wrong register for the upper 32 bits.

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Al Cooper 2015-07-24 16:09:36 -04:00 committed by Felipe Balbi
parent cbfe8fa6cd
commit 02c3b4c759
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/bdc/bdc_ep.c
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@ -779,7 +779,7 @@ static int ep_dequeue(struct bdc_ep *ep, struct bdc_req *req)
/* The current hw dequeue pointer */ /* The current hw dequeue pointer */
tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(0)); tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(0));
deq_ptr_64 = tmp_32; deq_ptr_64 = tmp_32;
tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(1)); tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS1(0));
deq_ptr_64 |= ((u64)tmp_32 << 32); deq_ptr_64 |= ((u64)tmp_32 << 32);
/* we have the dma addr of next bd that will be fetched by hardware */ /* we have the dma addr of next bd that will be fetched by hardware */