[PATCH] Use the new sg_page() helper
Emil Medve <Emilian.Medve <at> Freescale.com>
2007-10-23 16:14:52 GMT
Fix build error messages such as this:
In file included from include/linux/dma-mapping.h:52,
from include/linux/dmaengine.h:29,
from include/linux/skbuff.h:29,
from include/linux/netlink.h:155,
from include/linux/genetlink.h:4,
from include/net/genetlink.h:4,
from include/linux/taskstats_kern.h:12,
from init/main.c:46:
include/asm/dma-mapping.h: In function 'dma_map_sg':
include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page'
include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page'
include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page'
include/asm/dma-mapping.h:290: error: 'struct scatterlist' has no member named 'page'
This change in the struct scatterlist was introduced by this commit: 18dabf473e15850c0dbc8ff13ac1e2806d542c15
Signed-off-by: Emil Medve <Emilian.Medve <at> Freescale.com>
---
linux-2.6> scripts/checkpatch.pl 0001-Use-the-new-sg_page-helper.patch
Your patch has no obvious style problems and is ready for submission.
drivers/mmc/host/mmci.h | 4 ++--
drivers/pci/intel-iommu.c | 2 +-
include/asm-arm/dma-mapping.h | 8 ++++----
include/asm-parisc/scatterlist.h | 3 ++-
include/asm-powerpc/dma-mapping.h | 10 +++++-----
include/asm-xtensa/dma-mapping.h | 10 +++++-----
6 files changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 000e6a9..de3c223 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
<at> <at> -112,7 +112,7 <at> <at>
* The size of the FIFO in bytes.
*/
#define MCI_FIFOSIZE (16*4)
-
+
#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
#define NR_SG 16
<at> <at> -169,7 +169,7 <at> <at> static inline char *mmci_kmap_atomic(struct mmci_host *host, unsigned long *flag
struct scatterlist *sg = host->sg_ptr;
local_irq_save(*flags);
- return kmap_atomic(sg->page, KM_BIO_SRC_IRQ) + sg->offset;
+ return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
}
static inline void mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags)
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index b3d7031..347948c 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
<at> <at> -2010,7 +2010,7 <at> <at> static int intel_nontranslate_map_sg(struct device *hddev,
struct scatterlist *sg;
for_each_sg(sglist, sg, nelems, i) {
- BUG_ON(!sg->page);
+ BUG_ON(!sg_page(sg));
sg->dma_address = virt_to_bus(SG_ENT_VIRT_ADDRESS(sg));
sg->dma_length = sg->length;
}
diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h
index 1eb8aac..08afd5a 100644
--- a/include/asm-arm/dma-mapping.h
+++ b/include/asm-arm/dma-mapping.h
<at> <at> -274,8 +274,8 <at> <at> dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
for (i = 0; i < nents; i++, sg++) {
char *virt;
- sg->dma_address = page_to_dma(dev, sg->page) + sg->offset;
- virt = page_address(sg->page) + sg->offset;
+ sg->dma_address = page_to_dma(dev, sg_page(sg)) + sg->offset;
+ virt = page_address(sg_page(sg)) + sg->offset;
if (!arch_is_coherent())
dma_cache_maint(virt, sg->length, dir);
<at> <at> -371,7 +371,7 <at> <at> dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
int i;
for (i = 0; i < nents; i++, sg++) {
- char *virt = page_address(sg->page) + sg->offset;
+ char *virt = page_address(sg_page(sg)) + sg->offset;
if (!arch_is_coherent())
dma_cache_maint(virt, sg->length, dir);
}
<at> <at> -384,7 +384,7 <at> <at> dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
int i;
for (i = 0; i < nents; i++, sg++) {
- char *virt = page_address(sg->page) + sg->offset;
+ char *virt = page_address(sg_page(sg)) + sg->offset;
if (!arch_is_coherent())
dma_cache_maint(virt, sg->length, dir);
}
diff --git a/include/asm-parisc/scatterlist.h b/include/asm-parisc/scatterlist.h
index cd3cfdf..3c79a2a 100644
--- a/include/asm-parisc/scatterlist.h
+++ b/include/asm-parisc/scatterlist.h
<at> <at> -18,7 +18,8 <at> <at> struct scatterlist {
__u32 iova_length; /* bytes mapped */
};
-#define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset))
+#define sg_virt_addr(sg) \
+ ((unsigned long)(page_address(sg_page(sg)) + sg->offset))
#define sg_dma_address(sg) ((sg)->iova)
#define sg_dma_len(sg) ((sg)->iova_length)
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h
index 65be95d..ff52013 100644
--- a/include/asm-powerpc/dma-mapping.h
+++ b/include/asm-powerpc/dma-mapping.h
<at> <at> -285,9 +285,9 <at> <at> dma_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
BUG_ON(direction == DMA_NONE);
for_each_sg(sgl, sg, nents, i) {
- BUG_ON(!sg->page);
- __dma_sync_page(sg->page, sg->offset, sg->length, direction);
- sg->dma_address = page_to_bus(sg->page) + sg->offset;
+ BUG_ON(!sg_page(sg));
+ __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
+ sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset;
}
return nents;
<at> <at> -328,7 +328,7 <at> <at> static inline void dma_sync_sg_for_cpu(struct device *dev,
BUG_ON(direction == DMA_NONE);
for_each_sg(sgl, sg, nents, i)
- __dma_sync_page(sg->page, sg->offset, sg->length, direction);
+ __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
}
static inline void dma_sync_sg_for_device(struct device *dev,
<at> <at> -341,7 +341,7 <at> <at> static inline void dma_sync_sg_for_device(struct device *dev,
BUG_ON(direction == DMA_NONE);
for_each_sg(sgl, sg, nents, i)
- __dma_sync_page(sg->page, sg->offset, sg->length, direction);
+ __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
}
static inline int dma_mapping_error(dma_addr_t dma_addr)
diff --git a/include/asm-xtensa/dma-mapping.h b/include/asm-xtensa/dma-mapping.h
index 82b03b3..2b3e975 100644
--- a/include/asm-xtensa/dma-mapping.h
+++ b/include/asm-xtensa/dma-mapping.h
<at> <at> -58,10 +58,10 <at> <at> dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
BUG_ON(direction == DMA_NONE);
for (i = 0; i < nents; i++, sg++ ) {
- BUG_ON(!sg->page);
+ BUG_ON(!sg_page(sg));
- sg->dma_address = page_to_phys(sg->page) + sg->offset;
- consistent_sync(page_address(sg->page) + sg->offset,
+ sg->dma_address = page_to_phys(sg_page(sg)) + sg->offset;
+ consistent_sync(page_address(sg_page(sg)) + sg->offset,
sg->length, direction);
}
<at> <at> -128,7 +128,7 <at> <at> dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
{
int i;
for (i = 0; i < nelems; i++, sg++)
- consistent_sync(page_address(sg->page) + sg->offset,
+ consistent_sync(page_address(sg_page(sg)) + sg->offset,
sg->length, dir);
}
<at> <at> -138,7 +138,7 <at> <at> dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
{
int i;
for (i = 0; i < nelems; i++, sg++)
- consistent_sync(page_address(sg->page) + sg->offset,
+ consistent_sync(page_address(sg_page(sg)) + sg->offset,
sg->length, dir);
}
static inline int
--
--
1.5.3.GIT
(why not push this in upstream? [I mean ./include/asm-generic/page.h])
>
> > Even thought following test seems to be ok:
> > unsigned int a;
> > unsigned long ul;
> >
> > /* for proof of concept
> > */
> > for (ul=0; ul<536870914; ul++) {
> > if ( get_iovp_order(ul) != get_iovp_order_faster(ul) ) {
> > printf("get_iovp_order(%ld) = %ld (0x%x)\n\n", ul, a =
get_iovp_order(ul), a);
> > printf("get_iovp_order_faster(%ld) = %ld (0x%x)\n\n", ul, a =
> > get_iovp_order_faster(ul), a);
> > exit (1);
> > }
> > }
> >
> > But what would give the kernel generic (include/asm-generic/page.h: this is
> > what get_iovp_order() is if IOVP_SHIFT==PAGE_SHIFT) get_order(0): 0?
> > the answer is 20 for paric and ia32?
>
> I don't know offhand.
> I'm not sure we have to handle that case...or if we do, make sure it's
handled correctly in get_iovp_order().
>
I just hope so that linux check to never call get_order(0) 
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