[PATCH net-next 1/2] net: kalmia: clean up bind error path

[PATCH net-next 1/2] net: kalmia: clean up bind error path

[Johan Hovold]

Drop bogus call to usb_driver_release_interface() from an error path in
the usbnet bind() callback, which is called during interface probe. At
this point the interface is not bound and usb_driver_release_interface()
returns early.

Also remove the bogus call to clear the interface data, which is owned
by the usbnet driver and would not even have been set by the time bind()
is called.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/net/usb/kalmia.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/usb/kalmia.c b/drivers/net/usb/kalmia.c
index 1ec523b0e932..bd2ba3659028 100644
--- a/drivers/net/usb/kalmia.c
+++ b/drivers/net/usb/kalmia.c
@@ -150,12 +150,8 @@ kalmia_bind(struct usbnet *dev, struct usb_interface *intf)
 	dev->rx_urb_size = dev->hard_mtu * 10; // Found as optimal after testing
 
 	status = kalmia_init_and_get_ethernet_addr(dev, ethernet_addr);
-
-	if (status) {
-		usb_set_intfdata(intf, NULL);
-		usb_driver_release_interface(driver_of(intf), intf);
+	if (status)
 		return status;
-	}
 
 	memcpy(dev->net->dev_addr, ethernet_addr, ETH_ALEN);
 
-- 
2.16.2

[PATCH net-next 2/2] net: cdc_eem: clean up bind error path

[Johan Hovold]

Drop bogus call to usb_driver_release_interface() from an error path in
the usbnet bind() callback, which is called during interface probe. At
this point the interface is not bound and usb_driver_release_interface()
returns early.

Also remove the bogus call to clear the interface data, which is owned
by the usbnet driver and would not even have been set by the time bind()
is called.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/net/usb/cdc_eem.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/usb/cdc_eem.c b/drivers/net/usb/cdc_eem.c
index f7180f8db39e..61ea4eaace5d 100644
--- a/drivers/net/usb/cdc_eem.c
+++ b/drivers/net/usb/cdc_eem.c
@@ -83,11 +83,8 @@ static int eem_bind(struct usbnet *dev, struct usb_interface *intf)
 	int status = 0;
 
 	status = usbnet_get_endpoints(dev, intf);
-	if (status < 0) {
-		usb_set_intfdata(intf, NULL);
-		usb_driver_release_interface(driver_of(intf), intf);
+	if (status < 0)
 		return status;
-	}
 
 	/* no jumbogram (16K) support for now */
 
-- 
2.16.2

Re: [PATCH net-next 2/2] net: cdc_eem: clean up bind error path

[Oliver Neukum]

Am Mittwoch, den 07.03.2018, 10:46 +0100 schrieb Johan Hovold:
> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
> ---
>  drivers/net/usb/cdc_eem.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/net/usb/cdc_eem.c b/drivers/net/usb/cdc_eem.c
> index f7180f8db39e..61ea4eaace5d 100644
> --- a/drivers/net/usb/cdc_eem.c
> +++ b/drivers/net/usb/cdc_eem.c
> @@ -83,11 +83,8 @@ static int eem_bind(struct usbnet *dev, struct usb_interface *intf)
>  	int status = 0;
>  
>  	status = usbnet_get_endpoints(dev, intf);
> -	if (status < 0) {
> -		usb_set_intfdata(intf, NULL);
> -		usb_driver_release_interface(driver_of(intf), intf);
> +	if (status < 0)
>  		return status;
> -	}
>  
>  	/* no jumbogram (16K) support for now */
>  

Re: [PATCH net-next 1/2] net: kalmia: clean up bind error path

[Greg KH]

On Wed, Mar 07, 2018 at 10:46:57AM +0100, Johan Hovold wrote:
> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [PATCH net-next 2/2] net: cdc_eem: clean up bind error path

[Greg KH]

On Wed, Mar 07, 2018 at 10:46:58AM +0100, Johan Hovold wrote:
> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [PATCH net-next 1/2] net: kalmia: clean up bind error path

[David Miller]

From: Johan Hovold <johan@kernel.org>
Date: Wed,  7 Mar 2018 10:46:57 +0100

> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>

Applied.

Re: [PATCH net-next 2/2] net: cdc_eem: clean up bind error path

[David Miller]

From: Johan Hovold <johan@kernel.org>
Date: Wed,  7 Mar 2018 10:46:58 +0100

> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@kernel.org>

Applied.