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Subject[PATCH 22/31] mtd: use parity functions in inftlcore.c
From
Date
From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
---
drivers/mtd/inftlcore.c | 17 ++++-------------
1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index b66b541..29567bb 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -457,15 +457,6 @@ static u16 INFTL_makefreeblock(struct INFTLrecord *inftl, unsigned pendingblock)
return INFTL_foldchain(inftl, LongestChain, pendingblock);
}

-static int nrbits(unsigned int val, int bitcount)
-{
- int i, total = 0;
-
- for (i = 0; (i < bitcount); i++)
- total += (((0x1 << i) & val) ? 1 : 0);
- return total;
-}
-
/*
* INFTL_findwriteunit: Return the unit number into which we can write
* for this block. Make it available if it isn't already.
@@ -593,10 +584,10 @@ hitused:
if (prev_block < inftl->nb_blocks)
prev_block -= inftl->firstEUN;

- parity = (nrbits(thisVUC, 16) & 0x1) ? 0x1 : 0;
- parity |= (nrbits(prev_block, 16) & 0x1) ? 0x2 : 0;
- parity |= (nrbits(anac, 8) & 0x1) ? 0x4 : 0;
- parity |= (nrbits(nacs, 8) & 0x1) ? 0x8 : 0;
+ parity = parity16(thisVUC);
+ parity |= parity16(prev_block) << 1;
+ parity |= parity8(anac) << 2;
+ parity |= parity8(nacs) << 3;

oob.u.a.virtualUnitNo = cpu_to_le16(thisVUC);
oob.u.a.prevUnitNo = cpu_to_le16(prev_block);
--
2.5.5
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