Re: drm/komeda: Fix a signedness bug

["james qian wang (Arm Technology China)" <james.qian.wang@arm.com>]

On Mon, Jan 21, 2019 at 04:59:52PM +0300, Dan Carpenter wrote:
> The mdev->irq value comes from platform_get_irq() so it can't be more
> than INT_MAX and if it's unsigned then it breaks the error handling in
> komeda_parse_dt().
>
> Fixes: 29e56aec911d ("drm/komeda: Add DT parsing")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_dev.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> index a0bf7050037a..a52da6180c69 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> @@ -82,7 +82,7 @@ struct komeda_dev {
>  struct clk *mclk;
>
>  /** @irq: irq number */
> -u32 irq;
> +int irq;
>

Hi Dan:

    Thank you.

    Liviu and I discussed this problem, and we decided to fix it by

    Remove IRQ parsing from initial series:
    https://patchwork.freedesktop.org/patch/277409/

    And add it back when add the fully IRQ handling:
    https://patchwork.freedesktop.org/patch/279491/

>  int n_pipelines;
>  struct komeda_pipeline *pipelines[KOMEDA_MAX_PIPELINES];
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