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
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