Messages in this thread Patch in this message | | | Date | Thu, 29 Oct 2020 15:08:09 +1100 | From | Stephen Rothwell <> | Subject | linux-next: build failure after merge of the akpm-current tree |
| |
Hi all,
After merging the akpm-current tree, today's linux-next build (powerpc ppc64_defconfig) failed like this:
lib/math/div64.c: In function 'mul_u64_u64_div_u64': lib/math/div64.c:202:6: error: implicit declaration of function 'ilog2' [-Werror=implicit-function-declaration] 202 | if (ilog2(a) + ilog2(b) > 62) { | ^~~~~
Caused by commit
4ec993a18ff6 ("kernel.h: Split out mathematical helpers")
I have applied the following patch for today:
From: Stephen Rothwell <sfr@canb.auug.org.au> Date: Thu, 29 Oct 2020 15:03:58 +1100 Subject: [PATCH] kernel.h: Split out mathematical helpers fix
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> --- lib/math/div64.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/lib/math/div64.c b/lib/math/div64.c index dcc826c40ca1..064d68a5391a 100644 --- a/lib/math/div64.c +++ b/lib/math/div64.c @@ -22,6 +22,7 @@ #include <linux/export.h> #include <linux/math.h> #include <linux/math64.h> +#include <linux/log2.h> /* Not needed on 64bit architectures */ #if BITS_PER_LONG == 32 -- 2.28.0 -- Cheers, Stephen Rothwell [unhandled content-type:application/pgp-signature] | |