linux-kernel - [PATCH 2/2] spi: Prevent a type mismatch warning using min

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Date:	Thu, 18 Feb 2016 14:32:58 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] spi: Prevent a type mismatch warning using min_t()

From: Thierry Reding <treding@...dia.com>

The min_t() variant of the min() macro uses an explicit cast to the type
given in the first argument and can be used to avoid a compiler warning
if both types differ (f.e. in signedness).

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/spi/spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index f123f9f4d779..fe001ec4471e 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2301,7 +2301,7 @@ static int __spi_split_transfer_maxsize(struct spi_master *master,
 	/* the first transfer just needs the length modified, so we
 	 * run it outside the loop
 	 */
-	xfers[0].len = min(maxsize, xfer[0].len);
+	xfers[0].len = min_t(size_t, maxsize, xfer[0].len);
 
 	/* all the others need rx_buf/tx_buf also set */
 	for (i = 1, offset = maxsize; i < count; offset += maxsize, i++) {
-- 
2.7.1