[media] em28xx: adjust period size at runtime

While the current hardcoded period is ok for the current values,
we may latter change the driver to work with different bit rates
or with different latencies than 64ms.

So, adust the period size at runtime.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
index 5d5d1b6f0294..10b817245f7e 100644
--- a/drivers/media/usb/em28xx/em28xx.h
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -505,6 +505,8 @@ struct em28xx_audio {
         unsigned int hwptr_done_capture;
         struct snd_card            *sndcard;
 
+        size_t period;
+
         int users;
         spinlock_t slock;
 };