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| author | Neil Armstrong <neil.armstrong@linaro.org> | 2024-10-11 16:38:26 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-10-21 15:27:33 -0600 |
| commit | 9214627f5ecede8610e33abf2de5a0083f3f80ce (patch) | |
| tree | f4208908bc9b855fdff2a1d540bfa008a02e6993 /drivers/ddr/imx/imx8m/ddr_init.c | |
| parent | 73ab8196886c145983d5ff5514c179487df0c6e1 (diff) | |
usb: dwc3: invalidate dcache on buffer used in interrupt handling
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-v1-1-58434ab4b3d3@linaro.org/
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'drivers/ddr/imx/imx8m/ddr_init.c')
0 files changed, 0 insertions, 0 deletions