From: Gregory Herrero <gregory.herr...@intel.com>
After all endpoints are disabled, fifo_map should have reached 0.
Its a bug if if didn't, so warn about it and reset it to 0 so that
driver can continue using all the fifos.
Signed-off-by: Gregory Herrero <gregory.herr...@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kau...@intel.com>
---
drivers/usb/dwc2/gadget.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index de5da92..a1fd86f 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -177,6 +177,10 @@ static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
int timeout;
u32 val;
+ /* Reset fifo map if not correctly cleared during previous session */
+ WARN_ON(hsotg->fifo_map);
+ hsotg->fifo_map = 0;
+
/* set RX/NPTX FIFO sizes */
writel(hsotg->g_rx_fifo_sz, hsotg->regs + GRXFSIZ);
writel((hsotg->g_rx_fifo_sz << FIFOSIZE_STARTADDR_SHIFT) |
--
1.9.1
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