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authorMichael Ellerman <mpe@ellerman.id.au>2017-07-31 20:20:29 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2017-07-31 20:20:29 +1000
commitbb272221e9db79f13d454e1f3fb6b05013be985e (patch)
tree36f4acc50e3fabac71fadd34c720c0a6011db470 /lib/bsearch.c
parentpowerpc/powernv/pci: Return failure for some uses of dma_set_mask() (diff)
parentLinux v4.13-rc1 (diff)
downloadwireguard-linux-bb272221e9db79f13d454e1f3fb6b05013be985e.tar.xz
wireguard-linux-bb272221e9db79f13d454e1f3fb6b05013be985e.zip
Merge tag 'v4.13-rc1' into fixes
The fixes branch is based off a random pre-rc1 commit, because we had some fixes that needed to go in before rc1 was released. However we now need to fix some code that went in after that point, but before rc1, so merge rc1 to get that code into fixes so we can fix it!
Diffstat (limited to 'lib/bsearch.c')
-rw-r--r--lib/bsearch.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/lib/bsearch.c b/lib/bsearch.c
index e33c179089db..18b445b010c3 100644
--- a/lib/bsearch.c
+++ b/lib/bsearch.c
@@ -33,19 +33,21 @@
void *bsearch(const void *key, const void *base, size_t num, size_t size,
int (*cmp)(const void *key, const void *elt))
{
- size_t start = 0, end = num;
+ const char *pivot;
int result;
- while (start < end) {
- size_t mid = start + (end - start) / 2;
+ while (num > 0) {
+ pivot = base + (num >> 1) * size;
+ result = cmp(key, pivot);
- result = cmp(key, base + mid * size);
- if (result < 0)
- end = mid;
- else if (result > 0)
- start = mid + 1;
- else
- return (void *)base + mid * size;
+ if (result == 0)
+ return (void *)pivot;
+
+ if (result > 0) {
+ base = pivot + size;
+ num--;
+ }
+ num >>= 1;
}
return NULL;