[PATCH RESEND] ath10k: Fix potential Rx ring corruption

[Kalle Valo]

Vasanthakumar Thiagarajan <vthiagar at qti.qualcomm.com> writes:

> When replenishing Rx buffers driver updates the address of the
> buffer and the index of rx buffer in rx ring to the firmware.
> Change in order by CPU can cause rx ring corruption. Add memory
> barrier before updating rx buffer index to guarantee the order.
>
> This could fix some instances of rx ring corruption due to done
> bit in rx attention flag not set.
>
> Signed-off-by: Vasanthakumar Thiagarajan <vthiagar at qti.qualcomm.com>

Thanks, applied to ath.git.

-- 
Kalle Valo