Re: [PATCH v2 13/22] i2c: core: Probe i2c master devices on demand
From: Wolfram Sang <hidden>
Date: 2015-08-09 12:34:42
Also in:
linux-acpi, linux-arm-kernel, linux-i2c, lkml
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 <redacted>
What is the status of this series? The boot time reduction sounds great.
quoted hunk ↗ jump to hunk
--- 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, of_dev_node_match); if (!dev) -- 2.4.3
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