drivers core: Miscellaneous changes for sysfs_emit

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>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 1e0526b6b9db15..adf828dfccf013 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -119,6 +119,7 @@ static ssize_t phys_index_show(struct device *dev,
 	unsigned long phys_index;
 
 	phys_index = mem->start_section_nr / sections_per_block;
+
 	return sysfs_emit(buf, "%08lx\n", phys_index);
 }
 
@@ -301,6 +302,7 @@ static ssize_t phys_device_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct memory_block *mem = to_memory_block(dev);
+
 	return sysfs_emit(buf, "%d\n", mem->phys_device);
 }
 
@@ -314,6 +316,7 @@ static int print_allowed_zone(char *buf, int len, int nid,
 	zone = zone_for_pfn_range(online_type, nid, start_pfn, nr_pages);
 	if (zone == default_zone)
 		return 0;
+
 	return sysfs_emit_at(buf, len, " %s", zone->name);
 }
 
@@ -354,7 +357,7 @@ static ssize_t valid_zones_show(struct device *dev,
 	len += print_allowed_zone(buf, len, nid, start_pfn, nr_pages,
 				  MMOP_ONLINE_MOVABLE, default_zone);
 out:
-	len += sysfs_emit_at(buf, len, "%s", "\n");
+	len += sysfs_emit_at(buf, len, "\n");
 	return len;
 }
 static DEVICE_ATTR_RO(valid_zones);