If core enters host hibernation when switching from
device mode to host mode disconnection of host cable
asserts a WARNING in dwc2_hsotg_init_fifo() that
fifo_map is not cleared.
To avoid the WARNING, fifo_map should be cleared
in dwc2_core_reset() function.
- Cleared fifo_map when resetting the core.
Signed-off-by: Artur Petrosyan <arturp@xxxxxxxxxxxx>
---
drivers/usb/dwc2/core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index fb471d18a3de..fbbd6a2f10ad 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -532,6 +532,12 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg, bool skip_wait)
greset |= GRSTCTL_CSFTRST;
dwc2_writel(hsotg, greset, GRSTCTL);
+ /* Clear fifo_map */
+ #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
+ IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
+ hsotg->fifo_map = 0;
+ #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */
+
if (dwc2_hsotg_wait_bit_clear(hsotg, GRSTCTL, GRSTCTL_CSFTRST, 50)) {
dev_warn(hsotg->dev, "%s: HANG! Soft Reset timeout GRSTCTL GRSTCTL_CSFTRST\n",
__func__);
--
2.11.0
