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Date: Mon, 14 Oct 2013 08:47:36 -0700
From: Guenter Roeck <linux@roeck-us.net>
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CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"linux-watchdog@vger.kernel.org" <linux-watchdog@vger.kernel.org>
Subject: usb_control_msg and non-dma buffers
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Hi all,

I am getting the following smatch error in drivers/watchdog/pcwd_usb.c:

drivers/watchdog/pcwd_usb.c:257 usb_pcwd_send_command() error: doing dma on the stack (buf)

This is from a call to usb_control_msg().

Is this a false positive or a real problem that needs to be fixed ?

Thanks,
Guenter