Messages in this thread Patch in this message | | | From | Harry Geyer <> | Subject | [PATCH] i2c: tiny-usb: check usb base class before assuming the interface on device is for this driver | Date | Thu, 27 Jul 2023 09:33:54 +0100 |
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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@devtank.co.uk> --- drivers/i2c/busses/i2c-tiny-usb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c index d1fa9ff5aeab..d6578e8908ac 100644 --- a/drivers/i2c/busses/i2c-tiny-usb.c +++ b/drivers/i2c/busses/i2c-tiny-usb.c @@ -222,6 +222,9 @@ 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) + return -ENODEV; + dev_dbg(&interface->dev, "probing usb device\n"); /* allocate memory for our device state and initialize it */ -- 2.34.1
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