Messages in this thread Patch in this message | | | From | Grant Likely <> | Subject | [PATCH] spi: Fix comparison of different integer types | Date | Thu, 6 Dec 2012 23:35:47 +0000 |
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Fix problem discovered with sparse: + drivers/spi/spi.c:1554:37: sparse: incompatible types in comparison expression (different signedness) drivers/spi/spi.c: In function 'spi_write_then_read': drivers/spi/spi.c:1554:23: warning: comparison of distinct pointer types lacks a cast [enabled by default]
The change to SPI_BUFSIZ was introduced in commit b3a223ee2, "spi: Remove SPI_BUFSIZ restriction on spi_write_then_read()"
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> --- 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 22c71e2..b370d292 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1551,7 +1551,7 @@ int spi_write_then_read(struct spi_device *spi, * using the pre-allocated buffer or the transfer is too large. */ if ((n_tx + n_rx) > SPI_BUFSIZ || !mutex_trylock(&lock)) { - local_buf = kmalloc(max(SPI_BUFSIZ, n_tx + n_rx), GFP_KERNEL); + local_buf = kmalloc(max((unsigned)SPI_BUFSIZ, n_tx + n_rx), GFP_KERNEL); if (!local_buf) return -ENOMEM; } else { -- 1.7.10.4
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