diff options
| author | David Fries <David@Fries.net> | 2014-04-09 05:37:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-27 22:56:21 +0200 |
| commit | 8a0427d192e6043834414210dd14cc1289daff18 (patch) | |
| tree | 1e76812e3744b6946a815fb94f877cc31d11b302 /Documentation/w1/w1.generic | |
| parent | connector: allow multiple messages to be sent in one packet (diff) | |
| download | linux-8a0427d192e6043834414210dd14cc1289daff18.tar.xz linux-8a0427d192e6043834414210dd14cc1289daff18.zip | |
w1: optional bundling of netlink kernel replies
Applications can submit a set of commands in one packet to the kernel,
and in some cases it is required such as reading the temperature
sensor results. This adds an option W1_CN_BUNDLE to the flags of
cn_msg to request the kernel to reply in one packet for efficiency.
The cn_msg flags now check for unknown flag values and return an error
if one is seen. See "Proper handling of unknown flags in system
calls" http://lwn.net/Articles/588444/
This corrects the ack values returned as per the protocol standard,
namely the original ack for status messages and seq + 1 for all others
such as the data returned from a read.
Some of the common variable names have been standardized as follows.
struct cn_msg *cn
struct w1_netlink_msg *msg
struct w1_netlink_cmd *cmd
struct w1_master *dev
When an argument and a function scope variable would collide, add req_
to the argument.
Signed-off-by: David Fries <David@Fries.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/w1/w1.generic')
| -rw-r--r-- | Documentation/w1/w1.generic | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/w1/w1.generic b/Documentation/w1/w1.generic index a31c5a242973..b2033c64c7da 100644 --- a/Documentation/w1/w1.generic +++ b/Documentation/w1/w1.generic @@ -82,7 +82,7 @@ driver - (standard) symlink to the w1 driver w1_master_add - Manually register a slave device w1_master_attempts - the number of times a search was attempted w1_master_max_slave_count - - the maximum slaves that may be attached to a master + - maximum number of slaves to search for at a time w1_master_name - the name of the device (w1_bus_masterX) w1_master_pullup - 5V strong pullup 0 enabled, 1 disabled w1_master_remove - Manually remove a slave device |