On 07/28/2016 11:25 AM, Xu Ziyuan wrote:
> This patch fixes data starvation by host timeout(HTO) error interrupt
> which occurred under FIFO mode transfer on rk3036 board.
>
> The former implement, the actual bytes were transmitted may be less than
> should be. The size will still subtract value of len in case of there is
> no receive/transmit FIFO data request interrupt.
>
> Signed-off-by: Ziyuan Xu <[email protected]>
> Acked-by: Jaehoon Chung <[email protected]>
> Reviewed-by: Simon Glass <[email protected]>
Applied on u-boot-mmc. Thanks!
Best Regards,
Jaehoon Chung
> ---
>
> drivers/mmc/dw_mmc.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
> index 38d4a64..41b7035 100644
> --- a/drivers/mmc/dw_mmc.c
> +++ b/drivers/mmc/dw_mmc.c
> @@ -120,6 +120,7 @@ static int dwmci_data_transfer(struct dwmci_host *host,
> struct mmc_data *data)
> }
>
> if (host->fifo_mode && size) {
> + len = 0;
> if (data->flags == MMC_DATA_READ) {
> if ((dwmci_readl(host, DWMCI_RINTSTS) &
> DWMCI_INTMSK_RXDR)) {
>
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