drivers/char/misc.c: use bitmap/bitops functions for dynamic minor number allocation

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Use DECLARE_BITMAP(), find_first_zero_bit(), set_bit() and clear_bit()
instead of rewriting code to do it with the minor number dynamic
allocation bitmap.

We need to invert the bit position to keep the code behaviour of using the
last minor numbers first, since we don't have a find_last_zero_bit.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Thadeu Lima de Souza Cascardo 2009-12-14 18:00:31 -08:00 • committed by Linus Torvalds

parent 4ae717da8d

commit 1f2f38d89d

1 changed files with 9 additions and 13 deletions

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drivers/char/misc.c

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