From: Arnd Bergmann Date: Tue, 13 Jan 2015 16:09:43 +0000 (+0100) Subject: infiniband: mlx5: avoid a compile-time warning X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7835bfb5261501590a508b3de3379e2231cb4853;p=linux-beck.git infiniband: mlx5: avoid a compile-time warning The return type of find_first_bit() is architecture specific, on ARM it is 'unsigned int', while the asm-generic code used on x86 and a lot of other architectures returns 'unsigned long'. When building the mlx5 driver on ARM, we get a warning about this: infiniband/hw/mlx5/mem.c: In function 'mlx5_ib_cont_pages': infiniband/hw/mlx5/mem.c:84:143: warning: comparison of distinct pointer types lacks a cast m = min(m, find_first_bit(&tmp, sizeof(tmp))); This patch changes the driver to use min_t to make it behave the same way on all architectures. Signed-off-by: Arnd Bergmann Acked-by: Eli Cohen Signed-off-by: David S. Miller --- diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c index b56e4c5593ee..611a9fdf2f38 100644 --- a/drivers/infiniband/hw/mlx5/mem.c +++ b/drivers/infiniband/hw/mlx5/mem.c @@ -81,7 +81,7 @@ void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift, for (k = 0; k < len; k++) { if (!(i & mask)) { tmp = (unsigned long)pfn; - m = min(m, find_first_bit(&tmp, sizeof(tmp))); + m = min_t(unsigned long, m, find_first_bit(&tmp, sizeof(tmp))); skip = 1 << m; mask = skip - 1; base = pfn;