[PATCH 4/7] [media] exynos4-is: use monotonic timestamps as advertized
From: Arnd Bergmann <arnd@arndb.de>
Date: 2015-09-15 15:49:44
Also in:
linux-media, linux-samsung-soc, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
The exynos4 fimc capture driver claims to use monotonic timestamps but calls ktime_get_real_ts(). This is both an incorrect API use, and a bad idea because of the y2038 problem and the fact that the wall clock time is not reliable for timestamps across suspend or settimeofday(). This changes the driver to use the normal v4l2_get_timestamp() function like all other drivers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/media/platform/exynos4-is/fimc-capture.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
index cfebf292e15a..776ea6d78d03 100644
--- a/drivers/media/platform/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/exynos4-is/fimc-capture.c@@ -183,8 +183,6 @@ void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) struct v4l2_subdev *csis = p->subdevs[IDX_CSIS]; struct fimc_frame *f = &cap->ctx->d_frame; struct fimc_vid_buffer *v_buf; - struct timeval *tv; - struct timespec ts; if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) { wake_up(&fimc->irq_queue);
@@ -193,13 +191,9 @@ void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) if (!list_empty(&cap->active_buf_q) && test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) { - ktime_get_real_ts(&ts); - v_buf = fimc_active_queue_pop(cap); - tv = &v_buf->vb.v4l2_buf.timestamp; - tv->tv_sec = ts.tv_sec; - tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; + v4l2_get_timestamp(&v_buf->vb.v4l2_buf.timestamp); v_buf->vb.v4l2_buf.sequence = cap->frame_count++; vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
--
2.1.0.rc2