2015-05-18 12:30:33

by Dan Carpenter

Subject: [patch] USB: devio: fix a condition in async_completed()

Static checkers complain that the current condition is never true. It
seems pretty likely that it's a typo and "URB" was intended instead of
"USB".

Fixes: 3d97ff63f899 ('usbdevfs: Use scatter-gather lists for large bulk transfers')
Signed-off-by: Dan Carpenter <[email protected]>

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 4b0448c..986abde 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -513,7 +513,7 @@ static void async_completed(struct urb *urb)
snoop(&urb->dev->dev, "urb complete\n");
snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
as->status, COMPLETE, NULL, 0);
- if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN)
+ if ((urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN)
snoop_urb_data(urb, urb->actual_length);

if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&

2015-05-18 14:42:27

by Alan Stern

Subject: Re: [patch] USB: devio: fix a condition in async_completed()

On Mon, 18 May 2015, Dan Carpenter wrote:

> Static checkers complain that the current condition is never true. It
> seems pretty likely that it's a typo and "URB" was intended instead of
> "USB".
>
> Fixes: 3d97ff63f899 ('usbdevfs: Use scatter-gather lists for large bulk transfers')
> Signed-off-by: Dan Carpenter <[email protected]>
>
> diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
> index 4b0448c..986abde 100644
> --- a/drivers/usb/core/devio.c
> +++ b/drivers/usb/core/devio.c
> @@ -513,7 +513,7 @@ static void async_completed(struct urb *urb)
> snoop(&urb->dev->dev, "urb complete\n");
> snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
> as->status, COMPLETE, NULL, 0);
> - if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN)
> + if ((urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN)
> snoop_urb_data(urb, urb->actual_length);
>
> if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&

Yes, this most certainly is a typo. Or rather, it is a copy of a typo
originally introduced in commit 0880aef49e40 (USB: usbfs_snoop: add
data logging back in).

Acked-by: Alan Stern <[email protected]>