Re: [PATCH v2 13/22] i2c: core: Probe i2c master devices on demand
From: Wolfram Sang
Date: Sun Aug 09 2015 - 08:34:49 EST
On Tue, Jul 28, 2015 at 03:19:44PM +0200, Tomeu Vizoso wrote:
> When looking up an i2c master through its firmware node, probe it if it
> hasn't already.
> The goal is to reduce deferred probes to a minimum, as it makes it very
> cumbersome to find out why a device failed to probe, and can introduce
> very big delays in when a critical device is probed.
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
What is the status of this series? The boot time reduction sounds great.
> Changes in v2: None
> drivers/i2c/i2c-core.c | 2 ++
> 1 file changed, 2 insertions(+)
> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
> index e6d4935161e4..5520b413e3db 100644
> --- a/drivers/i2c/i2c-core.c
> +++ b/drivers/i2c/i2c-core.c
> @@ -1353,6 +1353,8 @@ struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node)
> struct device *dev;
> + fwnode_ensure_device(&node->fwnode);
TBH, the function name doesn't tell me a lot. It ensures what?
> dev = bus_find_device(&i2c_bus_type, NULL, node,
> if (!dev)
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