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media: saa7146: switch from 'pci_' to 'dma_' API

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The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.

When memory is allocated in 'saa7146_pgtable_alloc()' GFP_KERNEL can be
used because the callers are either .buf_prepare functions or function that
already use GFP_KERNEL (hidden in a 'vmalloc_32()' call).

When memory is allocated in 'saa7146_init_one()' GFP_KERNEL can be used
because it is probe function and no lock is taken in the between.

When memory is allocated in 'saa7146_vv_init()' GFP_KERNEL can be used
because this function already uses GFP_KERNEL and no lock is taken in the
between.

When memory is allocated in 'vbi_workaround()' GFP_KERNEL can be used
because it is only called from a .open function.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Christophe JAILLET 2020-11-29 13:30:11 +01:00 committed by Mauro Carvalho Chehab
parent 8a9e71e05a
commit 9c0660e447
3 changed files with 28 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/media/common/saa7146/saa7146_core.c
View File

@ -177,7 +177,7 @@ void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa
goto err_free_slist;
pt->nents = pages;
slen = pci_map_sg(pci,pt->slist,pt->nents,PCI_DMA_FROMDEVICE);
slen = dma_map_sg(&pci->dev, pt->slist, pt->nents, DMA_FROM_DEVICE);
if (0 == slen)
goto err_free_pgtable;
@ -187,7 +187,7 @@ void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa
return mem;
err_unmap_sg:
pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE);
dma_unmap_sg(&pci->dev, pt->slist, pt->nents, DMA_FROM_DEVICE);
err_free_pgtable:
saa7146_pgtable_free(pci, pt);
err_free_slist:
@ -201,7 +201,7 @@ err_null:
void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, void *mem, struct saa7146_pgtable *pt)
{
pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE);
dma_unmap_sg(&pci->dev, pt->slist, pt->nents, DMA_FROM_DEVICE);
saa7146_pgtable_free(pci, pt);
kfree(pt->slist);
pt->slist = NULL;
@ -212,7 +212,7 @@ void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt)
{
if (NULL == pt->cpu)
return;
pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
dma_free_coherent(&pci->dev, pt->size, pt->cpu, pt->dma);
pt->cpu = NULL;
}
@ -221,7 +221,7 @@ int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt)
__le32 *cpu;
dma_addr_t dma_addr = 0;
cpu = pci_alloc_consistent(pci, PAGE_SIZE, &dma_addr);
cpu = dma_alloc_coherent(&pci->dev, PAGE_SIZE, &dma_addr, GFP_KERNEL);
if (NULL == cpu) {
return -ENOMEM;
}
@ -412,18 +412,20 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent
err = -ENOMEM;
/* get memory for various stuff */
dev->d_rps0.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
&dev->d_rps0.dma_handle);
dev->d_rps0.cpu_addr = dma_alloc_coherent(&pci->dev, SAA7146_RPS_MEM,
&dev->d_rps0.dma_handle,
GFP_KERNEL);
if (!dev->d_rps0.cpu_addr)
goto err_free_irq;
dev->d_rps1.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
&dev->d_rps1.dma_handle);
dev->d_rps1.cpu_addr = dma_alloc_coherent(&pci->dev, SAA7146_RPS_MEM,
&dev->d_rps1.dma_handle,
GFP_KERNEL);
if (!dev->d_rps1.cpu_addr)
goto err_free_rps0;
dev->d_i2c.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
&dev->d_i2c.dma_handle);
dev->d_i2c.cpu_addr = dma_alloc_coherent(&pci->dev, SAA7146_RPS_MEM,
&dev->d_i2c.dma_handle, GFP_KERNEL);
if (!dev->d_i2c.cpu_addr)
goto err_free_rps1;
@ -471,14 +473,14 @@ out:
return err;
err_free_i2c:
pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_i2c.cpu_addr,
dev->d_i2c.dma_handle);
dma_free_coherent(&pci->dev, SAA7146_RPS_MEM, dev->d_i2c.cpu_addr,
dev->d_i2c.dma_handle);
err_free_rps1:
pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps1.cpu_addr,
dev->d_rps1.dma_handle);
dma_free_coherent(&pci->dev, SAA7146_RPS_MEM, dev->d_rps1.cpu_addr,
dev->d_rps1.dma_handle);
err_free_rps0:
pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps0.cpu_addr,
dev->d_rps0.dma_handle);
dma_free_coherent(&pci->dev, SAA7146_RPS_MEM, dev->d_rps0.cpu_addr,
dev->d_rps0.dma_handle);
err_free_irq:
free_irq(pci->irq, (void *)dev);
err_unmap:
@ -519,7 +521,8 @@ static void saa7146_remove_one(struct pci_dev *pdev)
free_irq(pdev->irq, dev);
for (p = dev_map; p->addr; p++)
pci_free_consistent(pdev, SAA7146_RPS_MEM, p->addr, p->dma);
dma_free_coherent(&pdev->dev, SAA7146_RPS_MEM, p->addr,
p->dma);
iounmap(dev->mem);
pci_release_region(pdev, 0);

7
drivers/media/common/saa7146/saa7146_fops.c
View File

@ -515,8 +515,8 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
dev->ext_vv_data = ext_vv;
vv->d_clipping.cpu_addr =
pci_zalloc_consistent(dev->pci, SAA7146_CLIPPING_MEM,
&vv->d_clipping.dma_handle);
dma_alloc_coherent(&dev->pci->dev, SAA7146_CLIPPING_MEM,
&vv->d_clipping.dma_handle, GFP_KERNEL);
if( NULL == vv->d_clipping.cpu_addr ) {
ERR("out of memory. aborting.\n");
kfree(vv);
@ -574,7 +574,8 @@ int saa7146_vv_release(struct saa7146_dev* dev)
DEB_EE("dev:%p\n", dev);
v4l2_device_unregister(&dev->v4l2_dev);
pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
dma_free_coherent(&dev->pci->dev, SAA7146_CLIPPING_MEM,
vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
v4l2_ctrl_handler_free(&dev->ctrl_handler);
kfree(vv);
dev->vv_data = NULL;

6
drivers/media/common/saa7146/saa7146_vbi.c
View File

@ -22,7 +22,7 @@ static int vbi_workaround(struct saa7146_dev *dev)
as specified. there is this workaround, but please
don't let me explain it. ;-) */
cpu = pci_alloc_consistent(dev->pci, 4096, &dma_addr);
cpu = dma_alloc_coherent(&dev->pci->dev, 4096, &dma_addr, GFP_KERNEL);
if (NULL == cpu)
return -ENOMEM;
@ -123,12 +123,12 @@ static int vbi_workaround(struct saa7146_dev *dev)
/* stop rps1 for sure */
saa7146_write(dev, MC1, MASK_29);
pci_free_consistent(dev->pci, 4096, cpu, dma_addr);
dma_free_coherent(&dev->pci->dev, 4096, cpu, dma_addr);
return -EINTR;
}
}
pci_free_consistent(dev->pci, 4096, cpu, dma_addr);
dma_free_coherent(&dev->pci->dev, 4096, cpu, dma_addr);
return 0;
}