[PATCH] spi: Trivial warning fix

[Shubhrajyoti D]

The loop count i traverses for ntrans which is unsigned
so make the loop count i also unsigned.

Fix the below warning
In file included from drivers/spi/spi-omap2-mcspi.c:38:
include/linux/spi/spi.h: In function 'spi_message_alloc':
include/linux/spi/spi.h:556: warning: comparison between signed and unsigned integer expressions

Cc: Vitaly Wool <vwool@xxxxxxxxxxxxx>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx>
---
Untested !

 include/linux/spi/spi.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 176fce9..6ae4993 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -549,7 +549,7 @@ static inline struct spi_message *spi_message_alloc(unsigned ntrans, gfp_t flags
 			+ ntrans * sizeof(struct spi_transfer),
 			flags);
 	if (m) {
-		int i;
+		unsigned i;
 		struct spi_transfer *t = (struct spi_transfer *)(m + 1);
 
 		INIT_LIST_HEAD(&m->transfers);
-- 
1.7.0.4

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