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powerpc: Fix comment typos in arch/powerpc/include/asm/bitops.h

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In arch/powerpc/include/asm/bitops.h, the comments about bit numbers in
large (> 1 word) bitmaps have two typos:
- On ppc64 system, the LSB of the 4th word should be bit 192 rather than
  196, because if it's bit 196, bit 192-195 will be missing in the
  bitmap.
- On ppc32 system, the LSB of the second word should be bit 32 rather
  than 31, because bit 31 is already in the first word.

This patch fixes these typos.

Signed-off-by: Boqun Feng <boqun.feng@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Boqun Feng 2014-11-11 12:50:22 +08:00 committed by Michael Ellerman
parent 7048c84694
commit e7a7a65ed2
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/include/asm/bitops.h
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@ -14,9 +14,9 @@
*
* The bitop functions are defined to work on unsigned longs, so for a
* ppc64 system the bits end up numbered:
* |63..............0|127............64|191...........128|255...........196|
* |63..............0|127............64|191...........128|255...........192|
* and on ppc32:
* |31.....0|63....31|95....64|127...96|159..128|191..160|223..192|255..224|
* |31.....0|63....32|95....64|127...96|159..128|191..160|223..192|255..224|
*
* There are a few little-endian macros used mostly for filesystem
* bitmaps, these work on similar bit arrays layouts, but