[SLOF] [PATCH] xhci: add memory barrier after filling the trb

[Alexey Kardashevskiy]

On 05/02/2016 02:46 PM, Nikunj A Dadhania wrote:
> A memory barrier was missing after updating the trb details.
>
> Signed-off-by: Nikunj A Dadhania <nikunj at linux.vnet.ibm.com>
> ---
>  lib/libusb/usb-xhci.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/lib/libusb/usb-xhci.c b/lib/libusb/usb-xhci.c
> index 858cd12..070c2ef 100644
> --- a/lib/libusb/usb-xhci.c
> +++ b/lib/libusb/usb-xhci.c
> @@ -973,6 +973,7 @@ static void fill_trb_buff(struct xhci_command_trb *cmd,  uint32_t field1,
>  	cycle_state = (val & 0x1) ? 0 : 1;
>  	val =  cycle_state | (field4 & ~0x1);
>  	cmd->field[3] = cpu_to_le32(val);
> +	mb();
>
>  	dprintf("CMD %016lx val %08x cycle_state %d field1 %08x, field2  %08x, field3 %08x field4 %08x\n",
>  		cmd, val, cycle_state,
>

Thanks, applied.


-- 
Alexey