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usb: dwc3: gadget: add a per-endpoint request queue lock 

This will allow us to process several endpoints at a
time by making sure that we lock only shared
resources.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-04-13 16:44:39 +03:00
parent e9af922909
commit 74674cbf85
2 changed files with 3 additions and 0 deletions
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2
drivers/usb/dwc3/core.h
View File

@ -482,6 +482,7 @@ struct dwc3_event_buffer {
* @endpoint: usb endpoint
* @pending_list: list of pending requests for this endpoint
* @started_list: list of started requests on this endpoint
* @lock: spinlock for endpoint request queue traversal
* @regs: pointer to first endpoint register
* @trb_pool: array of transaction buffers
* @trb_pool_dma: dma address of @trb_pool
@ -504,6 +505,7 @@ struct dwc3_ep {
struct list_head pending_list;
struct list_head started_list;
spinlock_t lock;
void __iomem *regs;
struct dwc3_trb *trb_pool;

1
drivers/usb/dwc3/gadget.c
View File

@ -1845,6 +1845,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc,
(epnum & 1) ? "in" : "out");
dep->endpoint.name = dep->name;
spin_lock_init(&dep->lock);
dwc3_trace(trace_dwc3_gadget, "initializing %s", dep->name);