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Date: Tue, 31 Mar 2015 18:14:48 +0200 From: Tomeu Vizoso <tomeu.vizoso@...labora.com> To: linux-pm@...r.kernel.org Cc: Tomeu Vizoso <tomeu.vizoso@...labora.com>, Mauro Carvalho Chehab <mchehab@....samsung.com>, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 4/6] [media] media-devnode: Implement dev_pm_ops.prepare callback Have it return 1 so that media device nodes that are runtime-suspended won't be suspended when the system goes to a sleep state. This can make resume times considerably shorter because these devices don't need to be resumed when the system is awaken. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com> --- drivers/media/media-devnode.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c index ebf9626..2c36d0a 100644 --- a/drivers/media/media-devnode.c +++ b/drivers/media/media-devnode.c @@ -76,8 +76,18 @@ static void media_devnode_release(struct device *cd) mdev->release(mdev); } +static int media_bus_prepare(struct device *dev) +{ + return 1; +} + +static const struct dev_pm_ops media_bus_pm_ops = { + .prepare = media_bus_prepare, +}; + static struct bus_type media_bus_type = { .name = MEDIA_NAME, + .pm = &media_bus_pm_ops, }; static ssize_t media_read(struct file *filp, char __user *buf, -- 2.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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