diff options
author | Arnd Bergmann <arnd@arndb.de> | 2012-04-22 22:22:34 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2012-04-22 22:28:48 +0200 |
commit | 6540afeae0c66c99c24d43446dab90836170a4e6 (patch) | |
tree | 9d4ed5065c9ad95ad8bc4a26a6f5924e83019acd /drivers/media/video/uvc/uvc_video.c | |
parent | 17d2f847e6aa1181024cb881fdc6cbad18f11b04 (diff) | |
parent | 39ecc143b4c1f3d42e8300e7f5274681b99f95c2 (diff) |
Merge tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91 into next/cleanup
Nicolas Ferre <nicolas.ferre@atmel.com> writes:
First batch of AT91 cleanup for 3.5 kernel.
- The biggest improvement of this series is the ability to compile several
AT91 SoCs in one kernel image.
For now on it's limited to the DT-enabled boards but we can compile all
the core together.
- The Kconfig series is stacked before other patches as it is simple and
non-intrusive. Its goal is to remove too restrictive dependencies on
SoC names. This will allow to add support for newer SoC seamlessly.
- Some very "cosmetic" Kconfig changes are also added (entry names,
comments, etc.).
* tag 'at91-3.5-cleanup' of git://github.com/at91linux/linux-at91: (19 commits)
ARM: at91: add defconfig for device tree
ARM: at91/dt: do not specify the board any more
ARN: at91: introduce SOC_AT91xxx define to allow to compile SoC core support
ARM: at91: add SOC_AT91SAM9 kconfig option to factorise select
ARM: at91: pm select memory controler at runtime
ARM: at91: move at91_init_leds to board init
ARM: at91: do not pin mux the UARTs in init_early
ARM: at91: drop at91_set_serial_console
ARM: at91: uncompress: autodetect the uart to use
ARM: at91: uncompress Store UART address in a variable
hwrng: Kconfig: remove dependency for atmel-rng driver
Input: Kconfig: remove dependency for atmel_tsadcc driver
rtc: Kconfig: remove dependency for AT91 rtc driver
ARM: at91/Kconfig: website link for AT91SAM9G20-EK
ARM: at91/Kconfig: add AT91SAM9x5 family to AT91_EARLY_DBGU0 entry
ARM: at91/Kconfig: add clarifications to AT91SAM9M10G45-EK entry
ARM: at91/Kconfig: add comment to at91sam9x5 family entry
ARM: at91/Kconfig: change at91sam9g45 entry
ARM: at91: change AT91 Kconfig entry comment
Also updates the cleanup branch to v3.4-rc3.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/media/video/uvc/uvc_video.c')
-rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 4a44f9a1bae..b76b0ac0958 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -468,22 +468,30 @@ uvc_video_clock_decode(struct uvc_streaming *stream, struct uvc_buffer *buf, spin_unlock_irqrestore(&stream->clock.lock, flags); } -static int uvc_video_clock_init(struct uvc_streaming *stream) +static void uvc_video_clock_reset(struct uvc_streaming *stream) { struct uvc_clock *clock = &stream->clock; - spin_lock_init(&clock->lock); clock->head = 0; clock->count = 0; - clock->size = 32; clock->last_sof = -1; clock->sof_offset = -1; +} + +static int uvc_video_clock_init(struct uvc_streaming *stream) +{ + struct uvc_clock *clock = &stream->clock; + + spin_lock_init(&clock->lock); + clock->size = 32; clock->samples = kmalloc(clock->size * sizeof(*clock->samples), GFP_KERNEL); if (clock->samples == NULL) return -ENOMEM; + uvc_video_clock_reset(stream); + return 0; } @@ -1424,8 +1432,6 @@ static void uvc_uninit_video(struct uvc_streaming *stream, int free_buffers) if (free_buffers) uvc_free_urb_buffers(stream); - - uvc_video_clock_cleanup(stream); } /* @@ -1555,10 +1561,6 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags) uvc_video_stats_start(stream); - ret = uvc_video_clock_init(stream); - if (ret < 0) - return ret; - if (intf->num_altsetting > 1) { struct usb_host_endpoint *best_ep = NULL; unsigned int best_psize = 3 * 1024; @@ -1683,6 +1685,8 @@ int uvc_video_resume(struct uvc_streaming *stream, int reset) stream->frozen = 0; + uvc_video_clock_reset(stream); + ret = uvc_commit_video(stream, &stream->ctrl); if (ret < 0) { uvc_queue_enable(&stream->queue, 0); @@ -1819,25 +1823,35 @@ int uvc_video_enable(struct uvc_streaming *stream, int enable) uvc_uninit_video(stream, 1); usb_set_interface(stream->dev->udev, stream->intfnum, 0); uvc_queue_enable(&stream->queue, 0); + uvc_video_clock_cleanup(stream); return 0; } - ret = uvc_queue_enable(&stream->queue, 1); + ret = uvc_video_clock_init(stream); if (ret < 0) return ret; + ret = uvc_queue_enable(&stream->queue, 1); + if (ret < 0) + goto error_queue; + /* Commit the streaming parameters. */ ret = uvc_commit_video(stream, &stream->ctrl); - if (ret < 0) { - uvc_queue_enable(&stream->queue, 0); - return ret; - } + if (ret < 0) + goto error_commit; ret = uvc_init_video(stream, GFP_KERNEL); - if (ret < 0) { - usb_set_interface(stream->dev->udev, stream->intfnum, 0); - uvc_queue_enable(&stream->queue, 0); - } + if (ret < 0) + goto error_video; + + return 0; + +error_video: + usb_set_interface(stream->dev->udev, stream->intfnum, 0); +error_commit: + uvc_queue_enable(&stream->queue, 0); +error_queue: + uvc_video_clock_cleanup(stream); return ret; } |