From: Arnd Bergmann Date: Thu, 30 Jun 2016 12:47:10 +0000 (+0200) Subject: dmaengine: bcm2835: fix 64-bit warning X-Git-Tag: v4.8-rc1~117^2~16^2~1 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9a8d0efaff4b343e3cff8b2cfaba847a18e2c0d9;p=karo-tx-linux.git dmaengine: bcm2835: fix 64-bit warning 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 Fixes: 388cc7a281c0 ("dmaengine: bcm2835: add slave_sg support to bcm2835-dma") Signed-off-by: Vinod Koul --- 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;