usb: dwc3: core: drop DWC3_EVENT_BUFFERS_MAX

hardware will tell us how many event buffers we
need to support, so let's allocate the array
dynamically too.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 83e382b..a2db411 100644 (file)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -221,6 +221,12 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
        num = DWC3_NUM_INT(dwc->hwparams.hwparams1);
        dwc->num_event_buffers = num;
 
+       dwc->ev_buffs = kzalloc(sizeof(*dwc->ev_buffs) * num, GFP_KERNEL);
+       if (!dwc->ev_buffs) {
+               dev_err(dwc->dev, "can't allocate event buffers array\n");
+               return -ENOMEM;
+       }
+
        for (i = 0; i < num; i++) {
                struct dwc3_event_buffer        *evt;
 

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 95d5a87..d6f1b79 100644 (file)
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -53,7 +53,6 @@
 /* Global constants */
 #define DWC3_ENDPOINTS_NUM     32
 
-#define DWC3_EVENT_BUFFERS_MAX 2
 #define DWC3_EVENT_BUFFERS_SIZE        PAGE_SIZE
 #define DWC3_EVENT_TYPE_MASK   0xfe
 
@@ -603,7 +602,7 @@ struct dwc3 {
        struct platform_device  *xhci;
        struct resource         *res;
 
-       struct dwc3_event_buffer *ev_buffs[DWC3_EVENT_BUFFERS_MAX];
+       struct dwc3_event_buffer **ev_buffs;
        struct dwc3_ep          *eps[DWC3_ENDPOINTS_NUM];
 
        struct usb_gadget       gadget;