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usb: dwc3: core: drop DWC3_EVENT_BUFFERS_MAX

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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>
This commit is contained in:
Felipe Balbi 2011-10-24 12:03:13 +03:00
parent 5ddcee27c1
commit 457d3f214f
2 changed files with 7 additions and 2 deletions
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6
drivers/usb/dwc3/core.c
View File

@ -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;

3
drivers/usb/dwc3/core.h
View File

@ -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;