2007-10-23 16:25:53

by Emil Medve

[permalink] [raw]
Subject: [PATCH] Use the new sg_page() helper

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 <[email protected]>
---

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
@@ -112,7 +112,7 @@
* The size of the FIFO in bytes.
*/
#define MCI_FIFOSIZE (16*4)
-
+
#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)

#define NR_SG 16
@@ -169,7 +169,7 @@ 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
@@ -2010,7 +2010,7 @@ 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
@@ -274,8 +274,8 @@ 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);
@@ -371,7 +371,7 @@ 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);
}
@@ -384,7 +384,7 @@ 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
@@ -18,7 +18,8 @@ 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
@@ -285,9 +285,9 @@ 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;
@@ -328,7 +328,7 @@ 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,
@@ -341,7 +341,7 @@ 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
@@ -58,10 +58,10 @@ 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);
}

@@ -128,7 +128,7 @@ 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);
}

@@ -138,7 +138,7 @@ 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


2007-10-23 16:56:27

by Kristoffer Ericson

[permalink] [raw]
Subject: Re: [PATCH] Use the new sg_page() helper

Great, :D
Just dropped a bug report about this 5mins ago. Hope it gets commited shortly.


On Tue, 23 Oct 2007 11:14:52 -0500
Emil Medve <[email protected]> wrote:

> 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 <[email protected]>
> ---
>
> 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
> @@ -112,7 +112,7 @@
> * The size of the FIFO in bytes.
> */
> #define MCI_FIFOSIZE (16*4)
> -
> +
> #define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
>
> #define NR_SG 16
> @@ -169,7 +169,7 @@ 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
> @@ -2010,7 +2010,7 @@ 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
> @@ -274,8 +274,8 @@ 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);
> @@ -371,7 +371,7 @@ 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);
> }
> @@ -384,7 +384,7 @@ 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
> @@ -18,7 +18,8 @@ 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
> @@ -285,9 +285,9 @@ 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;
> @@ -328,7 +328,7 @@ 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,
> @@ -341,7 +341,7 @@ 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
> @@ -58,10 +58,10 @@ 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);
> }
>
> @@ -128,7 +128,7 @@ 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);
> }
>
> @@ -138,7 +138,7 @@ 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
>
> -
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2007-10-23 17:03:43

by Linus Torvalds

[permalink] [raw]
Subject: Re: [PATCH] Use the new sg_page() helper



On Tue, 23 Oct 2007, Emil Medve wrote:
>
> Fix build error messages such as this:

Some - but apparently not all - of these are already fixed in my tree,
through pulls from Jens. I just pushed out the result, can you resend the
parts that didn't already get fixed?

As is, the patch won't apply for me, since it touches many different parts
and some of them are fixed.

Linus

2007-10-23 18:40:34

by Jens Axboe

[permalink] [raw]
Subject: Re: [PATCH] Use the new sg_page() helper

On Tue, Oct 23 2007, Linus Torvalds wrote:
>
>
> On Tue, 23 Oct 2007, Emil Medve wrote:
> >
> > Fix build error messages such as this:
>
> Some - but apparently not all - of these are already fixed in my tree,
> through pulls from Jens. I just pushed out the result, can you resend the
> parts that didn't already get fixed?
>
> As is, the patch won't apply for me, since it touches many different parts
> and some of them are fixed.

Looks like just the mmc and xtensa bits, I've merged those up.

--
Jens Axboe