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authorAnders Roxell <anders.roxell@linaro.org>2019-01-10 14:15:35 +0300
committerVinod Koul <vkoul@kernel.org>2019-01-20 08:45:10 +0300
commit9227ab5643cb8350449502dd9e3168a873ab0e3b (patch)
tree9b56bb7581a06f9554cea15483110af5f780429e /drivers/dma/imx-dma.c
parentad0d92d7ba6aecbe2705907c38ff8d8be4da1e9c (diff)
downloadlinux-9227ab5643cb8350449502dd9e3168a873ab0e3b.tar.xz
dmaengine: imx-dma: fix warning comparison of distinct pointer types
The warning got introduced by commit 930507c18304 ("arm64: add basic Kconfig symbols for i.MX8"). Since it got enabled for arm64. The warning haven't been seen before since size_t was 'unsigned int' when built on arm32. ../drivers/dma/imx-dma.c: In function ‘imxdma_sg_next’: ../include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ^~ ../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’ (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~ ../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’ __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~ ../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’ #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~ ../drivers/dma/imx-dma.c:288:8: note: in expansion of macro ‘min’ now = min(d->len, sg_dma_len(sg)); ^~~ Rework so that we use min_t and pass in the size_t that returns the minimum of two values, using the specified type. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/imx-dma.c')
-rw-r--r--drivers/dma/imx-dma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index c2fff3f6c9ca..fa3ef43fe314 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -285,7 +285,7 @@ static inline int imxdma_sg_next(struct imxdma_desc *d)
struct scatterlist *sg = d->sg;
unsigned long now;
- now = min(d->len, sg_dma_len(sg));
+ now = min_t(size_t, d->len, sg_dma_len(sg));
if (d->len != IMX_DMA_LENGTH_LOOP)
d->len -= now;