On 10/11/24 4:38 PM, Neil Armstrong wrote:
On Qualcomm systems, the setup buffer and even buffers are in a bad state at interrupt handling, so invalidate the dcache lines for the setup_buf and event buffer to make sure we read correct data written by the hardware.
This fixes the following error: dwc3-generic-peripheral usb@a600000: UNKNOWN IRQ type -1 dwc3-generic-peripheral usb@a600000: UNKNOWN IRQ type 4673109
and invalid situation in dwc3_gadget_giveback() because setup_buf content is read at 0s and leads to fatal crash fixed by [1].
[1] https://lore.kernel.org/all/20240528-topic-sm8x50-dwc3-gadget-crash-fix-v1-1...
Reviewed-by: Mattijs Korpershoek mkorpershoek@baylibre.com Signed-off-by: Neil Armstrong neil.armstrong@linaro.org
Reviewed-by: Marek Vasut marex@denx.de