diff options
Diffstat (limited to 'drivers/base/interface.c')
-rw-r--r-- | drivers/base/interface.c | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/drivers/base/interface.c b/drivers/base/interface.c deleted file mode 100644 index bd515843a0cb..000000000000 --- a/drivers/base/interface.c +++ /dev/null | |||
@@ -1,51 +0,0 @@ | |||
1 | /* | ||
2 | * drivers/base/interface.c - common driverfs interface that's exported to | ||
3 | * the world for all devices. | ||
4 | * | ||
5 | * Copyright (c) 2002-3 Patrick Mochel | ||
6 | * Copyright (c) 2002-3 Open Source Development Labs | ||
7 | * | ||
8 | * This file is released under the GPLv2 | ||
9 | * | ||
10 | */ | ||
11 | |||
12 | #include <linux/device.h> | ||
13 | #include <linux/err.h> | ||
14 | #include <linux/stat.h> | ||
15 | #include <linux/string.h> | ||
16 | |||
17 | /** | ||
18 | * detach_state - control the default power state for the device. | ||
19 | * | ||
20 | * This is the state the device enters when it's driver module is | ||
21 | * unloaded. The value is an unsigned integer, in the range of 0-4. | ||
22 | * '0' indicates 'On', so no action will be taken when the driver is | ||
23 | * unloaded. This is the default behavior. | ||
24 | * '4' indicates 'Off', meaning the driver core will call the driver's | ||
25 | * shutdown method to quiesce the device. | ||
26 | * 1-3 indicate a low-power state for the device to enter via the | ||
27 | * driver's suspend method. | ||
28 | */ | ||
29 | |||
30 | static ssize_t detach_show(struct device * dev, char * buf) | ||
31 | { | ||
32 | return sprintf(buf, "%u\n", dev->detach_state); | ||
33 | } | ||
34 | |||
35 | static ssize_t detach_store(struct device * dev, const char * buf, size_t n) | ||
36 | { | ||
37 | u32 state; | ||
38 | state = simple_strtoul(buf, NULL, 10); | ||
39 | if (state > 4) | ||
40 | return -EINVAL; | ||
41 | dev->detach_state = state; | ||
42 | return n; | ||
43 | } | ||
44 | |||
45 | static DEVICE_ATTR(detach_state, 0644, detach_show, detach_store); | ||
46 | |||
47 | |||
48 | struct attribute * dev_default_attrs[] = { | ||
49 | &dev_attr_detach_state.attr, | ||
50 | NULL, | ||
51 | }; | ||