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| author | Arnd Bergmann <arnd@arndb.de> | 2016-06-30 14:47:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-07 15:21:24 +0200 |
| commit | 8409e9f230a9b75df7b7d1cdbc0a27fa9f13f858 (patch) | |
| tree | ba56c7cde8a78c6b59334eefc8b21bed975cb1c8 | |
| parent | 42ecc48879c3c4ed9e889f2a9d2e365352a6d197 (diff) | |
| download | linux-stable-8409e9f230a9b75df7b7d1cdbc0a27fa9f13f858.tar.gz linux-stable-8409e9f230a9b75df7b7d1cdbc0a27fa9f13f858.tar.bz2 linux-stable-8409e9f230a9b75df7b7d1cdbc0a27fa9f13f858.zip | |
dmaengine: bcm2835: fix 64-bit warning
commit 4aa819c79bb73f3d1bdf5244d0a0f7f15261504c upstream.
When building this driver on arm64, we get a harmless type
mismatch warning:
drivers/dma/bcm2835-dma.c: In function 'bcm2835_dma_fill_cb_chain_with_sg':
include/linux/kernel.h:743:17: warning: comparison of distinct pointer types lacks a cast
(void) (&_min1 == &_min2); \
^
drivers/dma/bcm2835-dma.c:409:21: note: in expansion of macro 'min'
cb->cb->length = min(len, max_len);
This changes the type of the 'len' variable to size_t, which
avoids the problem.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 388cc7a281c0 ("dmaengine: bcm2835: add slave_sg support to bcm2835-dma")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/dma/bcm2835-dma.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 6149b27c33ad..c8dd5b00c1b4 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -393,11 +393,12 @@ static void bcm2835_dma_fill_cb_chain_with_sg( unsigned int sg_len) { struct bcm2835_chan *c = to_bcm2835_dma_chan(chan); - size_t max_len = bcm2835_dma_max_frame_length(c); - unsigned int i, len; + size_t len, max_len; + unsigned int i; dma_addr_t addr; struct scatterlist *sgent; + max_len = bcm2835_dma_max_frame_length(c); for_each_sg(sgl, sgent, sg_len, i) { for (addr = sg_dma_address(sgent), len = sg_dma_len(sgent); len > 0; |