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Date: Sun, 21 Mar 2021 08:58:11 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: mchehab@...nel.org, m.szyprowski@...sung.com, leon@...nel.org,
hverkuil-cisco@...all.nl, tglx@...utronix.de,
vaibhavgupta40@...il.com
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] media: cx25821: switch from 'pci_' to 'dma_' API
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 'cx25821_riscmem_alloc()' GFP_KERNEL can be
used because either this flag is already used in the call chain, or it is
called from a 'buf_prepare' function.
The call chains are:
vb2_ops.buf_prepare (in cx25821-video.c)
cx25821_buffer_prepare (in cx25821-video.c)
cx25821_risc_buffer
cx25821_riscmem_alloc
snd_cx25821_hw_params (in cx25821-alsa.c) <-- use GFP_KERNEL
cx25821_risc_databuffer_audio
cx25821_riscmem_alloc
@@
@@
- 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@...adoo.fr>
---
If needed, see post from Christoph Hellwig on the kernel-janitors ML:
https://marc.info/?l=kernel-janitors&m=158745678307186&w=4
---
drivers/media/pci/cx25821/cx25821-alsa.c | 2 +-
drivers/media/pci/cx25821/cx25821-core.c | 10 +++++-----
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/pci/cx25821/cx25821-alsa.c b/drivers/media/pci/cx25821/cx25821-alsa.c
index 8797d85a6b0a..438fdcec6eac 100644
--- a/drivers/media/pci/cx25821/cx25821-alsa.c
+++ b/drivers/media/pci/cx25821/cx25821-alsa.c
@@ -402,7 +402,7 @@ static int dsp_buffer_free(struct cx25821_audio_dev *chip)
dprintk(2, "Freeing buffer\n");
cx25821_alsa_dma_unmap(chip);
cx25821_alsa_dma_free(chip->buf);
- 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;
diff --git a/drivers/media/pci/cx25821/cx25821-core.c b/drivers/media/pci/cx25821/cx25821-core.c
index 07b6d0c49bbf..40c10ca94def 100644
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -977,11 +977,11 @@ int cx25821_riscmem_alloc(struct pci_dev *pci,
dma_addr_t dma = 0;
if (risc->cpu && risc->size < size) {
- pci_free_consistent(pci, risc->size, risc->cpu, risc->dma);
+ dma_free_coherent(&pci->dev, risc->size, risc->cpu, risc->dma);
risc->cpu = NULL;
}
if (NULL == risc->cpu) {
- cpu = pci_zalloc_consistent(pci, size, &dma);
+ cpu = dma_alloc_coherent(&pci->dev, size, &dma, GFP_KERNEL);
if (NULL == cpu)
return -ENOMEM;
risc->cpu = cpu;
@@ -1202,8 +1202,8 @@ void cx25821_free_buffer(struct cx25821_dev *dev, struct cx25821_buffer *buf)
{
if (WARN_ON(buf->risc.size == 0))
return;
- pci_free_consistent(dev->pci,
- buf->risc.size, buf->risc.cpu, buf->risc.dma);
+ dma_free_coherent(&dev->pci->dev, buf->risc.size, buf->risc.cpu,
+ buf->risc.dma);
memset(&buf->risc, 0, sizeof(buf->risc));
}
@@ -1302,7 +1302,7 @@ static int cx25821_initdev(struct pci_dev *pci_dev,
dev->pci_lat, (unsigned long long)dev->base_io_addr);
pci_set_master(pci_dev);
- err = pci_set_dma_mask(pci_dev, 0xffffffff);
+ err = dma_set_mask(&pci_dev->dev, 0xffffffff);
if (err) {
pr_err("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
err = -EIO;
--
2.27.0
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