linux-kernel - [PATCH] staging: comedi: fix sparse warning in ni_mio

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Date:	Sat, 20 Jun 2015 16:47:33 +0000
From:	Geliang Tang <geliangtang@....com>
To:	abbotti@....co.uk, hsweeten@...ionengravers.com,
	gregkh@...uxfoundation.org
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Geliang Tang <geliangtang@....com>
Subject: [PATCH] staging: comedi: fix sparse warning in ni_mio_common.c

This patch fixes the following sparse warning:

drivers/staging/comedi/drivers/ni_mio_common.c:573:26: warning: shift
too big (4294967295) for type int

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 drivers/staging/comedi/drivers/ni_mio_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 6cc304a..420f752 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -570,7 +570,7 @@ static inline void ni_set_bitfield(struct comedi_device *dev, int reg,
 static inline unsigned ni_stc_dma_channel_select_bitfield(unsigned channel)
 {
 	if (channel < 4)
-		return 1 << channel;
+		return 1 << (channel & 0x03);
 	if (channel == 4)
 		return 0x3;
 	if (channel == 5)
-- 
1.9.1


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