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-rw-r--r--arch/x86/kernel/pci-gart_64.c2
-rw-r--r--drivers/ata/libata-core.c1
-rw-r--r--drivers/mmc/host/imxmmc.c2
-rw-r--r--drivers/s390/scsi/zfcp_def.h5
-rw-r--r--drivers/scsi/sg.c1
-rw-r--r--include/linux/scatterlist.h10
6 files changed, 14 insertions, 7 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index ae7e0161ce4..79b514b381b 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -435,7 +435,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents,
error:
flush_gart();
- gart_unmap_sg(dev, sg, nents, dir);
+ gart_unmap_sg(dev, sg, out, dir);
/* When it was forced or merged try again in a dumb way */
if (force_iommu || iommu_merge) {
out = dma_map_sg_nonforce(dev, sg, nents, dir);
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 081e3dfb64d..7ef515b3382 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4689,6 +4689,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
* data in this function or read data in ata_sg_clean.
*/
offset = lsg->offset + lsg->length - qc->pad_len;
+ sg_init_table(psg, 1);
sg_set_page(psg, nth_page(sg_page(lsg), offset >> PAGE_SHIFT),
qc->pad_len, offset_in_page(offset));
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c
index fc72e1fadb6..f2070a19cfa 100644
--- a/drivers/mmc/host/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -262,7 +262,7 @@ static void imxmci_setup_data(struct imxmci_host *host, struct mmc_data *data)
}
/* Convert back to virtual address */
- host->data_ptr = (u16*)sg_virt(sg);
+ host->data_ptr = (u16*)sg_virt(data->sg);
host->data_cnt = 0;
clear_bit(IMXMCI_PEND_DMA_DATA_b, &host->pending_events);
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 0754542978b..e268f79bdbd 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -70,11 +70,12 @@ zfcp_sg_to_address(struct scatterlist *list)
* zfcp_address_to_sg - set up struct scatterlist from kernel address
* @address: kernel address
* @list: struct scatterlist
+ * @size: buffer size
*/
static inline void
-zfcp_address_to_sg(void *address, struct scatterlist *list)
+zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
{
- sg_set_buf(list, address, 0);
+ sg_set_buf(list, address, size);
}
#define REQUEST_LIST_SIZE 128
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index b5fa4f09138..f1871ea0404 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1652,6 +1652,7 @@ sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp, int tablesize)
schp->buffer = kzalloc(sg_bufflen, gfp_flags);
if (!schp->buffer)
return -ENOMEM;
+ sg_init_table(schp->buffer, tablesize);
schp->sglist_len = sg_bufflen;
return tablesize; /* number of scat_gath elements allocated */
}
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index 45712317138..32326c293d7 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -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;
}