[PATCH v2 0/3] dwc3: gadget: properly fix cache operations

[Neil Armstrong]

Hi,

On 24/07/2024 17:48, Neil Armstrong wrote:
> We experience huge problems with cache handling on Qualcomm
> systems, and it appears the dcache handling in the DWC3 gadget
> code is quite wrong and causes operational issues.
> 
> This serie fixes the dcache operations on unaligned data,
> and properly invalidate buffers when reading back data from
> hardware.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong at linaro.org>
> ---
> Changes in v2:
> - Fix typo in drivers/usb/dwc3/core.h and rewrite patch 1 commit message
> - Link to v1: https://lore.kernel.org/r/20240719-u-boot-dwc3-gadget-dcache-fixup-v1-0-58a5f026ea8e@linaro.org
> 
> ---
> Neil Armstrong (3):
>        usb: dwc3: allocate setup_buf with dma_alloc_coherent()
>        usb: dwc3: fix dcache flush range calculation
>        usb: dwc3: invalidate dcache on buffer used in interrupt handling
> 
>   drivers/usb/dwc3/core.h   |  2 ++
>   drivers/usb/dwc3/ep0.c    |  6 ++++--
>   drivers/usb/dwc3/gadget.c | 10 ++++++----
>   drivers/usb/dwc3/io.h     | 13 ++++++++++++-
>   4 files changed, 24 insertions(+), 7 deletions(-)
> ---
> base-commit: 3f772959501c99fbe5aa0b22a36efe3478d1ae1c
> change-id: 20240719-u-boot-dwc3-gadget-dcache-fixup-ea1e92758663
> 
> Best regards,

Gentle ping, those fixes are quite important to make USB Gadget reliable
on Qualcomm platforms,

Thanks,
Neil