Hi Dario,
On Sun, Sep 04, 2022 at 04:10:19PM +0200, Dario Binacchi wrote:
> Driver registration fails on SOC imx8mn as its supplier, the clock
> control module, is probed later than subsys initcall level. This driver
> uses platform_driver_probe which is not compatible with deferred probing
> and won't be probed again later if probe function fails due to clock not
> being available at that time.
>
> This patch replaces the use of platform_driver_probe with
> platform_driver_register which will allow probing the driver later again
> when the clock control module will be available.
>
> Fixes: a580b8c5429a ("dmaengine: mxs-dma: add dma support for i.MX23/28")
> Co-developed-by: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Dario Binacchi <dario.binacchi@xxxxxxxxxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
How I see it v3 of this patch is perfectly fine and should be taken
instead of this one. I just commented that to v3.
Not sure if Vinod would take v3, or if you should resend v3 as v6
instead. If you do, you can add my Acked-by.
Vinod, please let us know what you prefer.
Sascha
>
> ---
>
> Changes in v5:
> - Update the commit message.
> - Add the patch "dmaengine: mxs: fix section mismatch" to remove the
> warning raised by this patch.
>
> Changes in v4:
> - Restore __init in front of mxs_dma_probe() definition.
> - Rename the mxs_dma_driver variable to mxs_dma_driver_probe.
> - Update the commit message.
> - Use builtin_platform_driver() instead of module_platform_driver().
>
> Changes in v3:
> - Restore __init in front of mxs_dma_init() definition.
>
> Changes in v2:
> - Add the tag "Cc: stable@xxxxxxxxxxxxxxx" in the sign-off area.
>
> drivers/dma/mxs-dma.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
> index 994fc4d2aca4..18f8154b859b 100644
> --- a/drivers/dma/mxs-dma.c
> +++ b/drivers/dma/mxs-dma.c
> @@ -839,10 +839,6 @@ static struct platform_driver mxs_dma_driver = {
> .name = "mxs-dma",
> .of_match_table = mxs_dma_dt_ids,
> },
> + .probe = mxs_dma_probe,
> };
> -
> -static int __init mxs_dma_module_init(void)
> -{
> - return platform_driver_probe(&mxs_dma_driver, mxs_dma_probe);
> -}
> -subsys_initcall(mxs_dma_module_init);
> +builtin_platform_driver(mxs_dma_driver);
> --
> 2.32.0
>
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
