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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 16:58:16 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 16:58:16 (GMT) |
commit | 240c3c3424366c8109babd2a0fe80855de511b35 (patch) | |
tree | 72eb8652c8e513715efee1e254644b4b670333fd /drivers/media/v4l2-core/videobuf2-dma-sg.c | |
parent | 19b344efa35dbc253e2d10403dafe6aafda73c56 (diff) | |
parent | df90e2258950fd631cdbf322c1ee1f22068391aa (diff) | |
download | linux-fsl-qoriq-240c3c3424366c8109babd2a0fe80855de511b35.tar.xz |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media update from Mauro Carvalho Chehab:
- OF documentation and patches at core and drivers, to be used by for
embedded media systems
- some I2C drivers used on go7007 were rewritten/promoted from staging:
sony-btf-mpx, tw2804, tw9903, tw9906, wis-ov7640, wis-uda1342
- add fimc-is driver (Exynos)
- add a new radio driver: radio-si476x
- add a two new tuners: r820t and tuner_it913x
- split camera code on em28xx driver and add more models
- the cypress firmware load is used outside dvb usb drivers. So, move
it to a common directory to make easier to re-use it
- siano media driver updated to work with sms2270 devices
- several work done in order to promote go7007 and solo6x1x out of
staging (still, there are some pending issues)
- several API compliance fixes at v4l2 drivers that don't behave as
expected
- as usual, lots of driver fixes, improvements, cleanups and new device
addition at the existing drivers.
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (831 commits)
[media] cx88: make core less verbose
[media] em28xx: fix oops at em28xx_dvb_bus_ctrl()
[media] s5c73m3: fix indentation of the help section in Kconfig
[media] cx25821-alsa: get rid of a __must_check warning
[media] cx25821-video: declare cx25821_vidioc_s_std as static
[media] cx25821-video: remove maxw from cx25821_vidioc_try_fmt_vid_cap
[media] r820t: Remove a warning for an unused value
[media] dib0090: Fix a warning at dib0090_set_EFUSE
[media] dib8000: fix a warning
[media] dib8000: Fix sub-channel range
[media] dib8000: store dtv_property_cache in a temp var
[media] dib8000: warning fix: declare internal functions as static
[media] r820t: quiet gcc warning on n_ring
[media] r820t: memory leak in release()
[media] r820t: precendence bug in r820t_xtal_check()
[media] videodev2.h: Remove the unused old V4L1 buffer types
[media] anysee: Grammar s/report the/report to/
[media] anysee: Initialize ret = 0 in anysee_frontend_attach()
[media] media: videobuf2: fix the length check for mmap
[media] em28xx: save isoc endpoint number for DVB only if endpoint has alt settings with xMaxPacketSize != 0
...
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-dma-sg.c')
-rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-sg.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c index 25c3b36..16ae3dc 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c @@ -21,6 +21,15 @@ #include <media/videobuf2-memops.h> #include <media/videobuf2-dma-sg.h> +static int debug; +module_param(debug, int, 0644); + +#define dprintk(level, fmt, arg...) \ + do { \ + if (debug >= level) \ + printk(KERN_DEBUG "vb2-dma-sg: " fmt, ## arg); \ + } while (0) + struct vb2_dma_sg_buf { void *vaddr; struct page **pages; @@ -33,7 +42,7 @@ struct vb2_dma_sg_buf { static void vb2_dma_sg_put(void *buf_priv); -static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size) +static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, gfp_t gfp_flags) { struct vb2_dma_sg_buf *buf; int i; @@ -46,7 +55,8 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size) buf->write = 0; buf->offset = 0; buf->sg_desc.size = size; - buf->sg_desc.num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; + /* size is already page aligned */ + buf->sg_desc.num_pages = size >> PAGE_SHIFT; buf->sg_desc.sglist = vzalloc(buf->sg_desc.num_pages * sizeof(*buf->sg_desc.sglist)); @@ -60,7 +70,8 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size) goto fail_pages_array_alloc; for (i = 0; i < buf->sg_desc.num_pages; ++i) { - buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN); + buf->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO | + __GFP_NOWARN | gfp_flags); if (NULL == buf->pages[i]) goto fail_pages_alloc; sg_set_page(&buf->sg_desc.sglist[i], @@ -73,7 +84,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size) atomic_inc(&buf->refcount); - printk(KERN_DEBUG "%s: Allocated buffer of %d pages\n", + dprintk(1, "%s: Allocated buffer of %d pages\n", __func__, buf->sg_desc.num_pages); return buf; @@ -96,7 +107,7 @@ static void vb2_dma_sg_put(void *buf_priv) int i = buf->sg_desc.num_pages; if (atomic_dec_and_test(&buf->refcount)) { - printk(KERN_DEBUG "%s: Freeing buffer of %d pages\n", __func__, + dprintk(1, "%s: Freeing buffer of %d pages\n", __func__, buf->sg_desc.num_pages); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages); @@ -162,7 +173,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, return buf; userptr_fail_get_user_pages: - printk(KERN_DEBUG "get_user_pages requested/got: %d/%d]\n", + dprintk(1, "get_user_pages requested/got: %d/%d]\n", num_pages_from_user, buf->sg_desc.num_pages); while (--num_pages_from_user >= 0) put_page(buf->pages[num_pages_from_user]); @@ -185,7 +196,7 @@ static void vb2_dma_sg_put_userptr(void *buf_priv) struct vb2_dma_sg_buf *buf = buf_priv; int i = buf->sg_desc.num_pages; - printk(KERN_DEBUG "%s: Releasing userspace buffer of %d pages\n", + dprintk(1, "%s: Releasing userspace buffer of %d pages\n", __func__, buf->sg_desc.num_pages); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->sg_desc.num_pages); |