usb: gadget: mv_u3d: add check for dma mapping error
mv_u3d_req_to_trb() does not check for dma mapping errors. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -462,6 +462,12 @@ static int mv_u3d_req_to_trb(struct mv_u3d_req *req)
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req->trb_head->trb_hw,
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req->trb_head->trb_hw,
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trb_num * sizeof(*trb_hw),
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trb_num * sizeof(*trb_hw),
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DMA_BIDIRECTIONAL);
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DMA_BIDIRECTIONAL);
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if (dma_mapping_error(u3d->gadget.dev.parent,
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req->trb_head->trb_dma)) {
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kfree(req->trb_head->trb_hw);
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kfree(req->trb_head);
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return -EFAULT;
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}
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req->chain = 1;
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req->chain = 1;
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}
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}
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