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[PATCH] i2c: update i2c_driver.command documentation

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Document i2c_driver.command as being deprecated, and don't suggest an
empty implementation of this callback as it doesn't make any sense.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare 2005-12-18 16:51:55 +01:00 committed by Greg Kroah-Hartman
parent d564baee29
commit fb687d73fa
1 changed files with 3 additions and 7 deletions
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10
Documentation/i2c/writing-clients
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@ -492,17 +492,13 @@ Note that some functions are marked by `__init', and some data structures
by `__init_data'. Hose functions and structures can be removed after
kernel booting (or module loading) is completed.
Command function
================
A generic ioctl-like function call back is supported. You will seldom
need this. You may even set it to NULL.
/* No commands defined */
int foo_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
need this, and its use is deprecated anyway, so newer design should not
use it. Set it to NULL.
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