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Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block

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* 'sg' of git://git.kernel.dk/linux-2.6-block:
  Correction of "Update drivers to use sg helpers" patch for IMXMMC driver
  sg_init_table() should use unsigned loop index variable
  sg_last() should use unsigned loop index variable
  Initialise scatter/gather list in sg driver
  Initialise scatter/gather list in ata_sg_setup
  x86: fix pci-gart failure handling
  SG: s390-scsi: missing size parameter in zfcp_address_to_sg()
  SG: clear termination bit in sg_chain()
This commit is contained in:
Linus Torvalds 2007-10-29 07:49:10 -07:00
commit 20dc9f01a8
6 changed files with 14 additions and 7 deletions
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10
include/linux/scatterlist.h
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@ -150,7 +150,7 @@ static inline struct scatterlist *sg_last(struct scatterlist *sgl,
struct scatterlist *ret = &sgl[nents - 1];
#else
struct scatterlist *sg, *ret = NULL;
int i;
unsigned int i;
for_each_sg(sgl, sg, nents, i)
ret = sg;
@ -179,7 +179,11 @@ static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,
#ifndef ARCH_HAS_SG_CHAIN
BUG();
#endif
prv[prv_nents - 1].page_link = (unsigned long) sgl | 0x01;
/*
* Set lowest bit to indicate a link pointer, and make sure to clear
* the termination bit if it happens to be set.
*/
prv[prv_nents - 1].page_link = ((unsigned long) sgl | 0x01) & ~0x02;
}
/**
@ -239,7 +243,7 @@ static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents)
sg_mark_end(sgl, nents);
#ifdef CONFIG_DEBUG_SG
{
int i;
unsigned int i;
for (i = 0; i < nents; i++)
sgl[i].sg_magic = SG_MAGIC;
}