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drivers core: Miscellaneous changes for sysfs_emit

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Change additional instances that could use sysfs_emit and sysfs_emit_at
that the coccinelle script could not convert.

o macros creating show functions with ## concatenation
o unbound sprintf uses with buf+len for start of output to sysfs_emit_at
o returns with ?: tests and sprintf to sysfs_emit
o sysfs output with struct class * not struct device * arguments

Miscellanea:

o remove unnecessary initializations around these changes
o consistently use int len for return length of show functions
o use octal permissions and not S_<FOO>
o rename a few show function names so DEVICE_ATTR_<FOO> can be used
o use DEVICE_ATTR_ADMIN_RO where appropriate
o consistently use const char *output for strings
o checkpatch/style neatening

Signed-off-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/r/8bc24444fe2049a9b2de6127389b57edfdfe324d.1600285923.git.joe@perches.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Joe Perches
2020-09-16 13:40:42 -07:00
committed by Greg Kroah-Hartman
parent 27275d3018
commit 948b3edba8
15 changed files with 308 additions and 267 deletions
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34
drivers/base/core.c
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@@ -240,27 +240,35 @@ void device_pm_move_to_tail(struct device *dev)
#define to_devlink(dev) container_of((dev), struct device_link, link_dev)
static ssize_t status_show(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr, char *buf)
{
char *status;
const char *output;
switch (to_devlink(dev)->status) {
case DL_STATE_NONE:
status = "not tracked"; break;
output = "not tracked";
break;
case DL_STATE_DORMANT:
status = "dormant"; break;
output = "dormant";
break;
case DL_STATE_AVAILABLE:
status = "available"; break;
output = "available";
break;
case DL_STATE_CONSUMER_PROBE:
status = "consumer probing"; break;
output = "consumer probing";
break;
case DL_STATE_ACTIVE:
status = "active"; break;
output = "active";
break;
case DL_STATE_SUPPLIER_UNBIND:
status = "supplier unbinding"; break;
output = "supplier unbinding";
break;
default:
status = "unknown"; break;
output = "unknown";
break;
}
return sysfs_emit(buf, "%s\n", status);
return sysfs_emit(buf, "%s\n", output);
}
static DEVICE_ATTR_RO(status);
@@ -1934,7 +1942,7 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
struct kset *kset;
struct kobj_uevent_env *env = NULL;
int i;
size_t count = 0;
int len = 0;
int retval;
/* search the kset, the device belongs to */
@@ -1964,10 +1972,10 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
/* copy keys to file */
for (i = 0; i < env->envp_idx; i++)
count += sprintf(&buf[count], "%s\n", env->envp[i]);
len += sysfs_emit_at(buf, len, "%s\n", env->envp[i]);
out:
kfree(env);
return count;
return len;
}
static ssize_t uevent_store(struct device *dev, struct device_attribute *attr,