[PATCH v1 01/10] usb: xhci: Add missing cache flush in the scratchpad array initialization

[Nicolas Saenz Julienne]

On Fri, 2020-04-24 at 18:50 +0200, Sylwester Nawrocki wrote:
> In current code there is no cache flush after initializing the scratchpad
> buffer array with the scratchpad buffer pointers. This leads to a failure
> of the "slot enable" command on the rpi4 board (Broadcom STB PCIe
> controller + VL805 USB hub) - the very first TRB transfer on the command
> ring fails and there is a timeout while waiting for the command completion
> event. After adding the missing cache flush everything seems to be working
> as expected.
> 
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>

Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne at suse.de>

Regards,
Nicolas

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