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media: pci: cx88: 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.

Only 2 functions allocate some memory. They are both in cx88-core.c

When memory is allocated in 'cx88_risc_buffer()', GFP_KERNEL can be
used because its 2 callers end up to '.buf_prepare' functions in 'vb2_ops'
structures.
The call chains are:

  .buf_prepare                   (cx88-vbi.c)
    --> buffer_prepare           (cx88-vbi.c)
      --> cx88_risc_buffer

  .buf_prepare                   (cx88-video.c)
    --> buffer_prepare           (cx88-video.c)
      --> cx88_risc_buffer

When memory is allocated in 'cx88_risc_databuffer()', GFP_KERNEL can be
used because its 2 callers end up to 'snd_cx88_hw_params' which already
uses GFP_KERNEL and '.buf_prepare' functions in 'vb2_ops' structures.
The call chains are:

  snd_cx88_hw_params                   (cx88-alsa.c)
    --> cx88_risc_databuffer

  .buf_prepare                         (cx88-blackbird.c)
    --> buffer_prepare                 (cx88-blackbird.c)
      --> cx8802_buf_prepare           (cx88-mpeg.c)
        --> cx88_risc_databuffer

  .buf_prepare                         (cx88-dvb.c)
    --> buffer_prepare                 (cx88-dvb.c)
      --> cx8802_buf_prepare           (cx88-mpeg.c)
        --> cx88_risc_databuffer

@@ @@
-    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
2021-06-13 19:36:34 +02:00
committed by Mauro Carvalho Chehab
parent 7ec1c4a57c
commit 00ae4ebc2d
7 changed files with 19 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/media/pci/cx88/cx88-alsa.c
View File

@@ -357,8 +357,8 @@ static int dsp_buffer_free(struct cx88_audio_dev *chip)
cx88_alsa_dma_unmap(chip);
cx88_alsa_dma_free(chip->buf);
if (risc->cpu)
pci_free_consistent(chip->pci, risc->size,
risc->cpu, risc->dma);
dma_free_coherent(&chip->pci->dev, risc->size, risc->cpu,
risc->dma);
kfree(chip->buf);
chip->buf = NULL;
@@ -868,7 +868,7 @@ static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
return err;
}
err = pci_set_dma_mask(pci, DMA_BIT_MASK(32));
err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
if (err) {
dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name);
cx88_core_put(core, pci);

3
drivers/media/pci/cx88/cx88-blackbird.c
View File

@@ -685,7 +685,8 @@ static void buffer_finish(struct vb2_buffer *vb)
struct cx88_riscmem *risc = &buf->risc;
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
dma_free_coherent(&dev->pci->dev, risc->size, risc->cpu,
risc->dma);
memset(risc, 0, sizeof(*risc));
}

6
drivers/media/pci/cx88/cx88-core.c
View File

@@ -152,7 +152,8 @@ int cx88_risc_buffer(struct pci_dev *pci, struct cx88_riscmem *risc,
instructions += 4;
risc->size = instructions * 8;
risc->dma = 0;
risc->cpu = pci_zalloc_consistent(pci, risc->size, &risc->dma);
risc->cpu = dma_alloc_coherent(&pci->dev, risc->size, &risc->dma,
GFP_KERNEL);
if (!risc->cpu)
return -ENOMEM;
@@ -190,7 +191,8 @@ int cx88_risc_databuffer(struct pci_dev *pci, struct cx88_riscmem *risc,
instructions += 3;
risc->size = instructions * 8;
risc->dma = 0;
risc->cpu = pci_zalloc_consistent(pci, risc->size, &risc->dma);
risc->cpu = dma_alloc_coherent(&pci->dev, risc->size, &risc->dma,
GFP_KERNEL);
if (!risc->cpu)
return -ENOMEM;

3
drivers/media/pci/cx88/cx88-dvb.c
View File

@@ -103,7 +103,8 @@ static void buffer_finish(struct vb2_buffer *vb)
struct cx88_riscmem *risc = &buf->risc;
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
dma_free_coherent(&dev->pci->dev, risc->size, risc->cpu,
risc->dma);
memset(risc, 0, sizeof(*risc));
}

6
drivers/media/pci/cx88/cx88-mpeg.c
View File

@@ -226,8 +226,8 @@ int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev,
dev->ts_packet_size, dev->ts_packet_count, 0);
if (rc) {
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size,
risc->cpu, risc->dma);
dma_free_coherent(&dev->pci->dev, risc->size,
risc->cpu, risc->dma);
memset(risc, 0, sizeof(*risc));
return rc;
}
@@ -386,7 +386,7 @@ static int cx8802_init_common(struct cx8802_dev *dev)
if (pci_enable_device(dev->pci))
return -EIO;
pci_set_master(dev->pci);
err = pci_set_dma_mask(dev->pci, DMA_BIT_MASK(32));
err = dma_set_mask(&dev->pci->dev, DMA_BIT_MASK(32));
if (err) {
pr_err("Oops: no 32bit PCI DMA ???\n");
return -EIO;

3
drivers/media/pci/cx88/cx88-vbi.c
View File

@@ -159,7 +159,8 @@ static void buffer_finish(struct vb2_buffer *vb)
struct cx88_riscmem *risc = &buf->risc;
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
dma_free_coherent(&dev->pci->dev, risc->size, risc->cpu,
risc->dma);
memset(risc, 0, sizeof(*risc));
}

5
drivers/media/pci/cx88/cx88-video.c
View File

@@ -492,7 +492,8 @@ static void buffer_finish(struct vb2_buffer *vb)
struct cx88_riscmem *risc = &buf->risc;
if (risc->cpu)
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
dma_free_coherent(&dev->pci->dev, risc->size, risc->cpu,
risc->dma);
memset(risc, 0, sizeof(*risc));
}
@@ -1288,7 +1289,7 @@ static int cx8800_initdev(struct pci_dev *pci_dev,
(unsigned long long)pci_resource_start(pci_dev, 0));
pci_set_master(pci_dev);
err = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
err = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
if (err) {
pr_err("Oops: no 32bit PCI DMA ???\n");
goto fail_core;