[PATCH 3.12 096/176] smiapp: Take mutex during PLL update in sensor initialisation
From: Jiri Slaby <hidden>
Date: 2015-01-29 09:20:45
Also in:
lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
From: Sakari Ailus <sakari.ailus@linux.intel.com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit f85698cd296f08218a7750f321e94607da128600 upstream. The mutex does not serialise anything in this case but avoids a lockdep warning from the control framework. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <redacted> Signed-off-by: Jiri Slaby <redacted> --- drivers/media/i2c/smiapp/smiapp-core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 371ca22843ee..4bfe83ffd577 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c@@ -2625,7 +2625,9 @@ static int smiapp_registered(struct v4l2_subdev *subdev) pll->flags |= SMIAPP_PLL_FLAG_OP_PIX_CLOCK_PER_LANE; pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]; + mutex_lock(&sensor->mutex); rval = smiapp_update_mode(sensor); + mutex_unlock(&sensor->mutex); if (rval) { dev_err(&client->dev, "update mode failed\n"); goto out_nvm_release;
--
2.2.2