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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-10-03 11:09:16 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-10-03 11:09:16 +0200 |
| commit | 0d3c24e936feefeca854073ccb40613cd6eba9a9 (patch) | |
| tree | 1f675397b924846740b0931b066ddce6f3d7eb3d /lib/bitmap.c | |
| parent | 1af0838de60e723cb02253ecc9b555c30f8f6a6f (diff) | |
| parent | ebec44a2456fbe5fe18aae88f6010f6878f0cb4a (diff) | |
Merge airlied/drm-next into drm-misc-next
Just catching up with upstream.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'lib/bitmap.c')
| -rw-r--r-- | lib/bitmap.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 9a532805364b..c82c61b66e16 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -513,7 +513,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, int nmaskbits) { unsigned int a, b, old_a, old_b; - unsigned int group_size, used_size; + unsigned int group_size, used_size, off; int c, old_c, totaldigits, ndigits; const char __user __force *ubuf = (const char __user __force *)buf; int at_start, in_range, in_partial_range; @@ -599,6 +599,8 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, a = old_a; b = old_b; old_a = old_b = 0; + } else { + used_size = group_size = b - a + 1; } /* if no digit is after '-', it's wrong*/ if (at_start && in_range) @@ -608,17 +610,9 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen, if (b >= nmaskbits) return -ERANGE; while (a <= b) { - if (in_partial_range) { - static int pos_in_group = 1; - - if (pos_in_group <= used_size) - set_bit(a, maskp); - - if (a == b || ++pos_in_group > group_size) - pos_in_group = 1; - } else - set_bit(a, maskp); - a++; + off = min(b - a + 1, used_size); + bitmap_set(maskp, a, off); + a += group_size; } } while (buflen && c == ','); return 0; |