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-v1-1-58434ab4b...@linaro.org/
Reviewed-by: Mattijs Korpershoek <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
