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Message-ID: <20230726160843.sbutc7g7nrn5g7rh@intel.intel>
Date: Wed, 26 Jul 2023 18:08:43 +0200
From: Andi Shyti <andi.shyti@...nel.org>
To: Harry Geyer <harry.geyer@...tank.co.uk>
Cc: Till Harbaum <till@...baum.org>, linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: tiny-usb: check usb base class before assuming the
interface on device is for this driver
Hi Harry,
it's OK, just few little adjustments...
On Wed, Jul 19, 2023 at 12:38:38PM +0100, Harry Geyer wrote:
> Patch allows usb devices with multiple interfaces to use this driver without
> this driver assuming all interfaces are i2c-tiny-usb.
>
> Signed-off-by: Harry Geyer <harry.geyer@...tank.co.uk>
Please add:
Fixes: e8c76eed2ecd ("i2c: New i2c-tiny-usb bus driver")
Cc: Till Harbaum <till@...baum.org>
Cc: <stable@...r.kernel.org> # v2.6.22+
> ---
> drivers/i2c/busses/i2c-tiny-usb.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
> index d1fa9ff5aeab..fc194c65e50e 100644
> --- a/drivers/i2c/busses/i2c-tiny-usb.c
> +++ b/drivers/i2c/busses/i2c-tiny-usb.c
> @@ -222,6 +222,11 @@ static int i2c_tiny_usb_probe(struct usb_interface *interface,
> int retval = -ENOMEM;
> u16 version;
>
> + if (interface->intf_assoc &&
> + interface->intf_assoc->bFunctionClass != USB_CLASS_VENDOR_SPEC) {
please fix the indentation here ('interface' and 'interface'
should go on the same line)
> + return -ENODEV;
> + }
please drop the brackets.
Andi
> +
> dev_dbg(&interface->dev, "probing usb device\n");
>
> /* allocate memory for our device state and initialize it */
> --
> 2.34.1
>
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