Re: [PATCH] media: hantro: Fix check for single irq

From: Ezequiel Garcia
Date: Thu Aug 05 2021 - 18:03:51 EST


Hi Jernej,

On Thu, 2021-08-05 at 21:04 +0200, Jernej Skrabec wrote:
> Some cores use only one interrupt and in such case interrupt name in DT
> is not needed. Driver supposedly accounted that, but due to the wrong
> field check it never worked. Fix that.
>
> Fixes: 18d6c8b7b4c9 ("media: hantro: add fallback handling for single irq/clk")
> Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
> ---
>  drivers/staging/media/hantro/hantro_drv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
> index 8a2edd67f2c6..20e508158871 100644
> --- a/drivers/staging/media/hantro/hantro_drv.c
> +++ b/drivers/staging/media/hantro/hantro_drv.c
> @@ -919,7 +919,7 @@ static int hantro_probe(struct platform_device *pdev)
>                 if (!vpu->variant->irqs[i].handler)
>                         continue;
>  
> -               if (vpu->variant->num_clocks > 1) {
> +               if (vpu->variant->num_irqs > 1) {

Oops, thanks for spotting this.

How about this instead?

diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
index 31d8449ca1d2..af7054b04155 100644
--- a/drivers/staging/media/hantro/hantro_drv.c
+++ b/drivers/staging/media/hantro/hantro_drv.c
@@ -918,16 +918,15 @@ static int hantro_probe(struct platform_device *pdev)
if (!vpu->variant->irqs[i].handler)
continue;

- if (vpu->variant->num_clocks > 1) {
- irq_name = vpu->variant->irqs[i].name;
- irq = platform_get_irq_byname(vpu->pdev, irq_name);
- } else {
+ irq_name = vpu->variant->irqs[i].name;
+ irq = platform_get_irq_byname(vpu->pdev, irq_name);
+ if (irq <= 0) {
/*
- * If the driver has a single IRQ, chances are there
- * will be no actual name in the DT bindings.
+ * Missing interrupt-names property in device tree,
+ * looking up interrupts by index.
*/
irq_name = "default";
- irq = platform_get_irq(vpu->pdev, 0);
+ irq = platform_get_irq(vpu->pdev, i);
}
if (irq <= 0)
return -ENXIO;



--
Kindly,
Ezequiel