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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")
Cc: stable <stable@kernel.org>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Message-ID: <20230530161720.179927-1-biju.das.jz@bp.renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3e6ac852fb