On Mon, Aug 09, 2021 at 08:20:48PM +0900, Jeaho Hwang wrote:
> If ctrl EP priming is failed (very rare case in standard linux),
> hw_ep_set_halt goes infinite loop. 50 was enough for zynq7000.
>
> Signed-off-by: Jeaho Hwang <jhhwang@xxxxxxxxxx>
> ---
> drivers/usb/chipidea/udc.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index d0cd1de1b6c7..92ca0b7e4310 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -210,6 +210,9 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
> return 0;
> }
>
> +/*will it be enough?*/
Please use ' ' characters in your comments.
And can you answer this, please do not add a question in a comment, be
sure about this.
> +#define HW_EP_SET_HALT_COUNT_MAX 100
> +
> /**
> * hw_ep_set_halt: configures ep halt & resets data toggle after clear (execute
> * without interruption)
> @@ -222,6 +225,7 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
> */
> static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value)
> {
> + int count = HW_EP_SET_HALT_COUNT_MAX;
> if (value != 0 && value != 1)
Please use checkpatch.pl when submitting patches :(
