diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 1 | ||||
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 8 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index ee854697c300..2d62f5646fdf 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -727,6 +727,7 @@ struct dwc3_ep { #define DWC3_EP_FORCE_RESTART_STREAM BIT(9) #define DWC3_EP_FIRST_STREAM_PRIMED BIT(10) #define DWC3_EP_PENDING_CLEAR_STALL BIT(11) +#define DWC3_EP_TXFIFO_RESIZED BIT(12) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN BIT(31) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 0d32e97f11cd..23de2a5a40d6 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -702,6 +702,7 @@ void dwc3_gadget_clear_tx_fifos(struct dwc3 *dwc) DWC31_GTXFIFOSIZ_TXFRAMNUM; dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num >> 1), size); + dep->flags &= ~DWC3_EP_TXFIFO_RESIZED; } dwc->num_ep_resized = 0; } @@ -747,6 +748,10 @@ static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep) if (!usb_endpoint_dir_in(dep->endpoint.desc) || dep->number <= 1) return 0; + /* bail if already resized */ + if (dep->flags & DWC3_EP_TXFIFO_RESIZED) + return 0; + ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); if ((dep->endpoint.maxburst > 1 && @@ -807,6 +812,7 @@ static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep) } dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->number >> 1), fifo_size); + dep->flags |= DWC3_EP_TXFIFO_RESIZED; dwc->num_ep_resized++; return 0; @@ -995,7 +1001,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) dep->stream_capable = false; dep->type = 0; - dep->flags = 0; + dep->flags &= DWC3_EP_TXFIFO_RESIZED; return 0; } |