[PATCH] drm: gma500: Replace 120ms mdelay calls in mdfld_dsi_pkg_sender.c

[Patrik Jakobsson]

On Mon, Oct 1, 2018 at 5:36 PM Phillip Potter <phil at philpotter.co.uk> wrote:
>
> Replace all 120ms mdelay macro calls with msleep function calls. As msleep is
> not suitable for < 20ms sleeps, also remove comment from mdelay(5) call.
>
> Signed-off-by: Phillip Potter <phil at philpotter.co.uk>
> ---
> diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c b/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
> index c50534c923df..a9c4116aad8a 100644
> --- a/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
> +++ b/drivers/gpu/drm/gma500/mdfld_dsi_pkg_sender.c
> @@ -322,13 +322,11 @@ static int send_pkg_prepare(struct mdfld_dsi_pkg_sender *sender, u8 data_type,
>
>         /*wait for 120 milliseconds in case exit_sleep_mode just be sent*/
>         if (unlikely(cmd == MIPI_DCS_ENTER_SLEEP_MODE)) {
> -               /*TODO: replace it with msleep later*/
> -               mdelay(120);
> +               msleep(120);

Hi Phillip,
This is executed while holding a spinlock so we cannot sleep here.
This is true for send_pkg_done() as well.

- Patrik
>         }
>
>         if (unlikely(cmd == MIPI_DCS_EXIT_SLEEP_MODE)) {
> -               /*TODO: replace it with msleep later*/
> -               mdelay(120);
> +               msleep(120);
>         }
>         return 0;
>  }
> @@ -351,14 +349,11 @@ static int send_pkg_done(struct mdfld_dsi_pkg_sender *sender, u8 data_type,
>         /*update panel status*/
>         if (unlikely(cmd == MIPI_DCS_ENTER_SLEEP_MODE)) {
>                 sender->panel_mode |= MDFLD_DSI_PANEL_MODE_SLEEP;
> -               /*TODO: replace it with msleep later*/
> -               mdelay(120);
> +               msleep(120);
>         } else if (unlikely(cmd == MIPI_DCS_EXIT_SLEEP_MODE)) {
>                 sender->panel_mode &= ~MDFLD_DSI_PANEL_MODE_SLEEP;
> -               /*TODO: replace it with msleep later*/
> -               mdelay(120);
> +               msleep(120);
>         } else if (unlikely(cmd == MIPI_DCS_SOFT_RESET)) {
> -               /*TODO: replace it with msleep later*/
>                 mdelay(5);
>         }
>