Aw: [PATCH] phy: rockchip-inno-usb2: Ignore OTG IRQs in host mode

[Frank Wunderlich]

Hi Samuel

thx for the fix...with this it works again

Tested-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>

regards Frank


> Gesendet: Freitag, 08. Juli 2022 um 08:14 Uhr
> Von: "Samuel Holland" <samuel@xxxxxxxxxxxx>
> An: "Frank Wunderlich" <frank-w@xxxxxxxxxxxxxxx>, "Vinod Koul" <vkoul@xxxxxxxxxx>
> Cc: "Greg Kroah-Hartman" <gregkh@xxxxxxxxxxxxxxxxxxx>, "Peter Geis" <pgwipeout@xxxxxxxxx>, "Samuel Holland" <samuel@xxxxxxxxxxxx>, "Heiko Stuebner" <heiko@xxxxxxxxx>, "Kishon Vijay Abraham I" <kishon@xxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-phy@xxxxxxxxxxxxxxxxxxx, linux-rockchip@xxxxxxxxxxxxxxxxxxx
> Betreff: [PATCH] phy: rockchip-inno-usb2: Ignore OTG IRQs in host mode
>
> When the OTG port is fixed to host mode, the driver does not request its
> IRQs, nor does it enable those IRQs in hardware. Similarly, the driver
> should ignore the OTG port IRQs when handling the shared interrupt.
>
> Otherwise, it would update the extcon based on an ID pin which may be in
> an undefined state, or try to queue a uninitialized work item.
>
> Fixes: 6a98df08ccd5 ("phy: rockchip-inno-usb2: Fix muxed interrupt support")
> Reported-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
> Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
> ---
>
>  drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> index 6711659f727c..26b841c49ec6 100644
> --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> @@ -978,7 +978,9 @@ static irqreturn_t rockchip_usb2phy_irq(int irq, void *data)
>
>  		switch (rport->port_id) {
>  		case USB2PHY_PORT_OTG:
> -			ret |= rockchip_usb2phy_otg_mux_irq(irq, rport);
> +			if (rport->mode != USB_DR_MODE_HOST &&
> +			    rport->mode != USB_DR_MODE_UNKNOWN)
> +				ret |= rockchip_usb2phy_otg_mux_irq(irq, rport);
>  			break;
>  		case USB2PHY_PORT_HOST:
>  			ret |= rockchip_usb2phy_linestate_irq(irq, rport);
> --
> 2.35.1
>
>