On Tue, Aug 10, 2021 at 03:02:28PM +0900, Jeaho Hwang wrote:
> hw_ep_prime sometimes fails if irq occurs while it rus on RT kernel.
> to prevent local_irq_save should keep the function from irqs.
>
> I am not sure where is the best to submit this patch, between RT and USB
> community so sending to both. thanks.
>
> Signed-off-by: Jeaho Hwang <jhhwang@xxxxxxxxxx>
> ---
> drivers/usb/chipidea/udc.c | 31 +++++++++++++++++++++++++------
> 1 file changed, 25 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index 5f35cdd2cf1d..a90498f17cc4 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -102,6 +102,9 @@ static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir)
> {
> int n = hw_ep_bit(num, dir);
>
> + /* From zynq-7000 TRM, It can take a long time
> + * so irq disable is not a good option for RT
> + */
Please use checkpatch.pl when submitting patches :(
