diff options
| author | Guennadi Liakhovetski <lg@denx.de> | 2008-12-18 12:28:54 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:40:22 -0200 |
| commit | 1c3bb7431d16f7486a8523d54380bad89c485dc8 (patch) | |
| tree | 89dd8e65f627df726e70de771130398ba73148b3 /drivers/media/video/sh_mobile_ceu_camera.c | |
| parent | bf507158eb27ea94aca300b28ecee60fdbb40007 (diff) | |
V4L/DVB (10083): soc-camera: unify locking, play nicer with videobuf locking
Move mutex from host drivers to camera device object, take into account
videobuf locking.
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/sh_mobile_ceu_camera.c')
| -rw-r--r-- | drivers/media/video/sh_mobile_ceu_camera.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c index a49bec1509f..47ffa441c86 100644 --- a/drivers/media/video/sh_mobile_ceu_camera.c +++ b/drivers/media/video/sh_mobile_ceu_camera.c @@ -29,7 +29,6 @@ #include <linux/version.h> #include <linux/device.h> #include <linux/platform_device.h> -#include <linux/mutex.h> #include <linux/videodev2.h> #include <linux/clk.h> @@ -75,8 +74,6 @@ #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ -static DEFINE_MUTEX(camera_lock); - /* per video frame buffer */ struct sh_mobile_ceu_buffer { struct videobuf_buffer vb; /* v4l buffer must be first */ @@ -292,14 +289,13 @@ static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) return IRQ_HANDLED; } +/* Called with .video_lock held */ static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; int ret = -EBUSY; - mutex_lock(&camera_lock); - if (pcdev->icd) goto err; @@ -319,11 +315,10 @@ static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) pcdev->icd = icd; err: - mutex_unlock(&camera_lock); - return ret; } +/* Called with .video_lock held */ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |