| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 48/98] [media] smiapp: Take mutex during PLL update in sensor initialisation | Date | Sun, 25 Jan 2015 10:07:06 -0800 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Sakari Ailus <sakari.ailus@linux.intel.com>
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 <mchehab@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/media/i2c/smiapp/smiapp-core.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2624,7 +2624,9 @@ static int smiapp_registered(struct v4l2 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;
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