[PATCH v2 0/3] USB: dwc2: Fix handling NAK

[Sascha Hauer]

A NAK should return -EAGAIN to let the retry logic work. This showed up
on a Samsung USB-C memory stick which otherwise was recognized, but
couldn't be initialized.

The v2 now adddresses Anis' log spamming problems. The solution here is
to just silence the error message by turning it into dev_dbg. The
message says "Timeout on bulk endpoint" which is normal and expected
behaviour. The usbnet driver expects bulk messages to timeout when
no RX data is available.

I do not have a Rpi4 CM to reproduce Anis problems, but I have seen the
same on a Rpi3B. With this series USB memory sticks now work on the
Rpi3B, hopefully on the Rpi4 CM as well.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
Changes in v2:
- Address Anis Chalis log spam problems
- Link to v1: https://lore.barebox.org/20260420-usb-dwc2-usb-c-stick-v1-0-c86f733f24f8@pengutronix.de

---
Sascha Hauer (3):
      usb: dwc2: Do not print error messages when URBs are nacked
      usb: dwc2: handle NAK when CHHLTD does not fire
      usb: dwc2: fix data toggle reset direction on ClearFeature(ENDPOINT_HALT)

 drivers/usb/dwc2/host.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)
---
base-commit: 651343da8af78d134d7ead4d2b36095d7ddc2d8f
change-id: 20260420-usb-dwc2-usb-c-stick-ea31c736477c

Best regards,
-- 
Sascha Hauer <s.hauer at pengutronix.de>