From: Alan Stern <stern@rowland.harvard.edu>
To: "Geoffrey D. Bennett" <g@b4.vu>
Cc: USB mailing list <linux-usb@vger.kernel.org>
Subject: Re: [PATCH] USB: usbfs: remove double evaluation of usb_sndctrlpipe()
Date: Fri, 21 May 2021 10:39:29 -0400 [thread overview]
Message-ID: <20210521143929.GC1239965@rowland.harvard.edu> (raw)
In-Reply-To: <20210521125856.116349-1-g@b4.vu>
On Fri, May 21, 2021 at 10:28:56PM +0930, Geoffrey D. Bennett wrote:
> usb_sndctrlpipe() is evaluated in do_proc_control(), saved in a
> variable, then evaluated again. Use the saved variable instead, to
> match the use of usb_rcvctrlpipe().
>
> Fixes: 4c6e8971cbe0 ("USB: make the "usbfs_snoop" log more pertinent")
> Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
> ---
> drivers/usb/core/devio.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
> index 533236366a03..4a8ec136460c 100644
> --- a/drivers/usb/core/devio.c
> +++ b/drivers/usb/core/devio.c
> @@ -1162,7 +1162,7 @@ static int do_proc_control(struct usb_dev_state *ps,
> tbuf, ctrl->wLength);
>
> usb_unlock_device(dev);
> - i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl->bRequest,
> + i = usb_control_msg(dev, pipe, ctrl->bRequest,
> ctrl->bRequestType, ctrl->wValue, ctrl->wIndex,
> tbuf, ctrl->wLength, tmo);
> usb_lock_device(dev);
When you resubmit without the Fixes: tag, you can add:
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Alan Stern
prev parent reply other threads:[~2021-05-21 14:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 12:58 [PATCH] USB: usbfs: remove double evaluation of usb_sndctrlpipe() Geoffrey D. Bennett
2021-05-21 13:17 ` Greg KH
2021-05-21 14:39 ` Alan Stern [this message]
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