diff options
| author | Corentin Labbe <clabbe@baylibre.com> | 2020-09-25 20:30:33 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-10-01 09:41:41 +0200 |
| commit | 886986804ad45618b58b160e6ab003d5473f5838 (patch) | |
| tree | 90666723e978bdd9d023b69a4ba1b7f6cd5be323 /drivers/staging | |
| parent | accd0214092eed398afdcfdef95a5f2ec9661706 (diff) | |
media: zoran: Use DMA coherent for stat_com
Instead of using a fragile virt_to_bus, let's use proper DMA coherent
for the stat_com entry.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/zoran/zoran.h | 2 | ||||
| -rw-r--r-- | drivers/staging/media/zoran/zoran_card.c | 22 | ||||
| -rw-r--r-- | drivers/staging/media/zoran/zoran_device.c | 3 |
3 files changed, 18 insertions, 9 deletions
diff --git a/drivers/staging/media/zoran/zoran.h b/drivers/staging/media/zoran/zoran.h index aa2a8f688a01..8f3faa4eb60f 100644 --- a/drivers/staging/media/zoran/zoran.h +++ b/drivers/staging/media/zoran/zoran.h @@ -351,6 +351,8 @@ struct zoran { unsigned long frame_num; wait_queue_head_t test_q; + + dma_addr_t p_sc; }; static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev) diff --git a/drivers/staging/media/zoran/zoran_card.c b/drivers/staging/media/zoran/zoran_card.c index 5919803a6a5e..9fe2bc2b036a 100644 --- a/drivers/staging/media/zoran/zoran_card.c +++ b/drivers/staging/media/zoran/zoran_card.c @@ -936,11 +936,17 @@ static int zr36057_init(struct zoran *zr) zoran_open_init_params(zr); /* allocate memory *before* doing anything to the hardware in case allocation fails */ - zr->stat_com = kzalloc(BUZ_NUM_STAT_COM * 4, GFP_KERNEL); zr->video_dev = video_device_alloc(); - if (!zr->stat_com || !zr->video_dev) { + if (!zr->video_dev) { err = -ENOMEM; - goto exit_free; + goto exit; + } + zr->stat_com = dma_alloc_coherent(&zr->pci_dev->dev, + BUZ_NUM_STAT_COM * sizeof(u32), + &zr->p_sc, GFP_KERNEL); + if (!zr->stat_com) { + err = -ENOMEM; + goto exit_video; } for (j = 0; j < BUZ_NUM_STAT_COM; j++) zr->stat_com[j] = cpu_to_le32(1); /* mark as unavailable to zr36057 */ @@ -958,7 +964,7 @@ static int zr36057_init(struct zoran *zr) zr->video_dev->vfl_dir = VFL_DIR_M2M; err = video_register_device(zr->video_dev, VFL_TYPE_VIDEO, video_nr[zr->id]); if (err < 0) - goto exit_free; + goto exit_statcom; video_set_drvdata(zr->video_dev, zr); zoran_init_hardware(zr); @@ -973,9 +979,11 @@ static int zr36057_init(struct zoran *zr) zr->initialized = 1; return 0; -exit_free: - kfree(zr->stat_com); +exit_statcom: + dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32), zr->stat_com, zr->p_sc); +exit_video: kfree(zr->video_dev); +exit: return err; } @@ -1009,7 +1017,7 @@ static void zoran_remove(struct pci_dev *pdev) btwrite(0, ZR36057_SPGPPCR); free_irq(zr->pci_dev->irq, zr); /* unmap and free memory */ - kfree(zr->stat_com); + dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32), zr->stat_com, zr->p_sc); iounmap(zr->zr36057_mem); pci_disable_device(zr->pci_dev); video_unregister_device(zr->video_dev); diff --git a/drivers/staging/media/zoran/zoran_device.c b/drivers/staging/media/zoran/zoran_device.c index 627ebda33cc8..0ecb044f8e8f 100644 --- a/drivers/staging/media/zoran/zoran_device.c +++ b/drivers/staging/media/zoran/zoran_device.c @@ -579,8 +579,7 @@ static void zr36057_set_jpg(struct zoran *zr, enum zoran_codec_mode mode) //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR); /* code base address */ - reg = virt_to_bus(zr->stat_com); - btwrite(reg, ZR36057_JCBA); + btwrite(zr->p_sc, ZR36057_JCBA); /* FIFO threshold (FIFO is 160. double words) */ /* NOTE: decimal values here */ |