On Tue, May 30, 2023 at 6:17 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> Currently {modprobe, bind} after {rmmod, unbind} results in probe failure.
>
> genirq: Flags mismatch irq 22. 00000004 (85070400.usb3drd) vs. 00000004 (85070400.usb3drd)
> renesas_usb3: probe of 85070000.usb3peri failed with error -16
>
> The reason is, it is trying to register an interrupt handler for the same
> IRQ twice. The devm_request_irq() was called with the parent device.
> So the interrupt handler won't be unregistered when the usb3-peri device
> is unbound.
>
> Fix this issue by replacing "parent dev"->"dev" as the irq resource
> is managed by this driver.
>
> Fixes: 9cad72dfc556 ("usb: gadget: Add support for RZ/V2M USB3DRD driver")
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
> v1->v2:
> * Added missing ')' at the end of the line for fixes tag.
> * Updated commit description.
> * Replaced "ddata->dev"->"&pdev->dev" for the devname parameter.
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
