diff options
| author | Jon Burgess <jburgess777@googlemail.com> | 2007-05-03 12:23:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-05-09 10:12:42 -0300 |
| commit | 87c3019d7b1acb7704a257d78c482112e9b0c227 (patch) | |
| tree | 312478a0bed426b3ca89bf4fae1880fed9986bd2 /drivers/media/dvb/ttpci/av7110.c | |
| parent | 32a1db42480dc972e8e92be68d9e604f6aff5381 (diff) | |
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 'drivers/media/dvb/ttpci/av7110.c')
| -rw-r--r-- | drivers/media/dvb/ttpci/av7110.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/media/dvb/ttpci/av7110.c b/drivers/media/dvb/ttpci/av7110.c index 67becdd4db6..ef1108c0bf1 100644 --- a/drivers/media/dvb/ttpci/av7110.c +++ b/drivers/media/dvb/ttpci/av7110.c @@ -1246,6 +1246,9 @@ static void vpeirq(unsigned long data) if (!budget->feeding1 || (newdma == olddma)) return; + /* Ensure streamed PCI data is synced to CPU */ + pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE); + #if 0 /* track rps1 activity */ printk("vpeirq: %02x Event Counter 1 0x%04x\n", @@ -2679,8 +2682,8 @@ err_iobuf_vfree_6: err_pci_free_5: pci_free_consistent(pdev, 8192, av7110->debi_virt, av7110->debi_bus); err_saa71466_vfree_4: - if (!av7110->grabbing) - saa7146_pgtable_free(pdev, &av7110->pt); + if (av7110->grabbing) + saa7146_vfree_destroy_pgtable(pdev, av7110->grabbing, &av7110->pt); err_i2c_del_3: i2c_del_adapter(&av7110->i2c_adap); err_dvb_unregister_adapter_2: @@ -2710,7 +2713,7 @@ static int __devexit av7110_detach(struct saa7146_dev* saa) SAA7146_ISR_CLEAR(saa, MASK_10); msleep(50); tasklet_kill(&av7110->vpe_tasklet); - saa7146_pgtable_free(saa->pci, &av7110->pt); + saa7146_vfree_destroy_pgtable(saa->pci, av7110->grabbing, &av7110->pt); } av7110_exit_v4l(av7110); |