On 5/29/2019 10:31 PM, Doug Anderson wrote:
Hi,
On Sun, Feb 17, 2019 at 10:37 PM Martin Schiller <[email protected]> wrote:
Insert a padding between data and the stored_xfer_buffer pointer to
ensure they are not on the same cache line.
Otherwise, the stored_xfer_buffer gets corrupted for IN URBs on
non-cache-coherent systems. (In my case: Lantiq xRX200 MIPS)
Fixes: 3bc04e28a030 ("usb: dwc2: host: Get aligned DMA in a more supported way")
Fixes: 56406e017a88 ("usb: dwc2: Fix DMA alignment to start at allocated
boundary")
Signed-off-by: Martin Schiller <[email protected]>
---
drivers/usb/dwc2/hcd.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
This patch has been in the back of my mind for a while bug I never got
around to it. Today I was debugging memory corruption problems when
using a webcam on dwc2 on rk3288-veyron-jerry. This patch appears to
solve my problems nicely. Thanks!
Tested-by: Douglas Anderson <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Cc: <[email protected]>
Acked-by: Minas Harutyunyan <[email protected]>
