diff options
| -rw-r--r-- | drivers/usb/dwc3/core.c | 4 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index d024d47c86d1..87d0cfb7b29e 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -224,6 +224,10 @@ static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, evt->dwc = dwc; evt->length = length; + evt->cache = devm_kzalloc(dwc->dev, length, GFP_KERNEL); + if (!evt->cache) + return ERR_PTR(-ENOMEM); + evt->buf = dma_alloc_coherent(dwc->dev, length, &evt->dma, GFP_KERNEL); if (!evt->buf) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 354de247356a..bf63756bc176 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -472,6 +472,7 @@ struct dwc3_trb; /** * struct dwc3_event_buffer - Software event buffer representation * @buf: _THE_ buffer + * @cache: The buffer cache used in the threaded interrupt * @length: size of this buffer * @lpos: event offset * @count: cache of last read event count register @@ -481,6 +482,7 @@ struct dwc3_trb; */ struct dwc3_event_buffer { void *buf; + void *cache; unsigned length; unsigned int lpos; unsigned int count; |