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@xxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/core.h | 2 ++
drivers/usb/dwc3/gadget.c | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index a71e2604bb86..a4c959f13f61 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -481,6 +481,7 @@ 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
@@ -503,6 +504,7 @@ struct dwc3_ep {
struct list_head pending_list;
struct list_head started_list;
+ spinlock_t lock;
void __iomem *regs;
struct dwc3_trb *trb_pool;
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index a39e64bc0627..65184d9480e8 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1823,6 +1823,7 @@ 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);
--
2.8.3
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