On Monday 18 March 2013 02:12 PM, Felipe Balbi wrote:
Hi,
On Mon, Mar 18, 2013 at 01:50:55PM +0530, kishon wrote:
@@ -141,7 +141,7 @@ static inline void map_dma_buffer(struct musb_request
*request,
static inline void unmap_dma_buffer(struct musb_request *request,
struct musb *musb)
{
- if (!is_buffer_mapped(request))
+ if (!is_buffer_mapped(request) || !musb_ep->dma)
return;
if (request->request.dma == DMA_ADDR_INVALID) {
@@ -195,7 +195,10 @@ __acquires(ep->musb->lock)
ep->busy = 1;
spin_unlock(&musb->lock);
- unmap_dma_buffer(req, musb);
+
+ if (!dma_mapping_error(request->dma))
this should have been *dma_mapping_error(&musb->g.dev, request->dma)*
indeed :-)
;-) But this doesn't work quite right. The dma_mapping_error
considers only *DMA_ERROR_CODE* as error. Maybe we should have
something like this
*if (!dma_mapping_error(&musb->g.dev, request->dma) && request->dma)*
won't 'is_buffer_mapped()' take care of the second check ?
No, it doesn't. Btw you've removed is_buffer_mapped() macro in *usb:
musb: gadget: switch over to usb_gadget_map/unmap_request()* patch..
I dropped that patch since MUSB needs a bit more care when switching to
generic map/unmap routines. We can do that for v3.11 instead.
Oh ok. Then we need to take care when we have that patch.
Thanks
Kishon
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