From 530376bfb7c82f50f20f9d28acd017194894eb66 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 9 Dec 2013 11:32:58 -0700 Subject: [PATCH] staging: comedi: ni_at_a2150: fix an always true condition test As pointed out by the kbuild test robot, and Ian Abbott, the dma >= 0 test is always true because dma is unsigned. This generates a warn message: drivers/staging/comedi/drivers/ni_at_a2150.c:715 a2150_attach() warn: always true condition '(dma >= 0) => (0-u32max >= 0)' Fix the test as suggested by Ian Abbott. Signed-off-by: H Hartley Sweeten Reported-by: kbuild test robot Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_at_a2150.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c b/drivers/staging/comedi/drivers/ni_at_a2150.c index 0876bc5c0209..0c71fdfecac2 100644 --- a/drivers/staging/comedi/drivers/ni_at_a2150.c +++ b/drivers/staging/comedi/drivers/ni_at_a2150.c @@ -712,7 +712,7 @@ static int a2150_attach(struct comedi_device *dev, struct comedi_devconfig *it) } } - if (dev->irq && ((dma >= 0 && dma <= 4) || (dma >= 5 && dma <= 7))) { + if (dev->irq && dma <= 7 && dma != 4) { ret = request_dma(dma, dev->board_name); if (ret == 0) { devpriv->dma = dma; -- 2.20.1