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| author | Jon Burgess <jburgess777@googlemail.com> | 2007-05-03 19:23:44 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-05-09 17:12:42 +0400 |
| commit | 87c3019d7b1acb7704a257d78c482112e9b0c227 (patch) | |
| tree | 312478a0bed426b3ca89bf4fae1880fed9986bd2 /include/media | |
| parent | 32a1db42480dc972e8e92be68d9e604f6aff5381 (diff) | |
| download | linux-87c3019d7b1acb7704a257d78c482112e9b0c227.tar.xz | |
V4L/DVB (5592): DMA: Correctly free resources on error, sync PCI streamed data
I added saa7146_vmalloc_destroy_pgtable() which frees the resources
allocated by saa7146_vmalloc_build_pgtable() and updated the callers in
budget-core.c and av7110.c. I have also been through the updated
functions and updated the error paths to ensure they free all allocated
resources on error.
I also realised that there are other callers to saa7146_pgtable_free()
which did not have any sg DMA mapped so it seems wrong to add the
pci_unmap_sg() into that function. Instead I created
saa7146_vmalloc_destroy_pgtable() to do this.
Also included in this patch are the previous fixes for pci_unmap_sg()
and syncing the PCI streamed data to work with a SWIOTLB and match the
requirements documented in DMA-API.txt.
Signed-off-by: Jon Burgess <jburgess777@googlemail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/saa7146.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/media/saa7146.h b/include/media/saa7146.h index 796bcf151a3a..d3f4f5a38214 100644 --- a/include/media/saa7146.h +++ b/include/media/saa7146.h @@ -58,6 +58,7 @@ struct saa7146_pgtable { unsigned long offset; /* used for custom pagetables (used for example by budget dvb cards) */ struct scatterlist *slist; + int nents; }; struct saa7146_pci_extension_data { @@ -157,6 +158,7 @@ int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt); void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt); int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, struct scatterlist *list, int length ); char *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa7146_pgtable *pt); +void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, char *mem, struct saa7146_pgtable *pt); void saa7146_setgpio(struct saa7146_dev *dev, int port, u32 data); int saa7146_wait_for_debi_done(struct saa7146_dev *dev, int nobusyloop); |