Follow the advice of the Documentation/filesystems/sysfs.rst
and show() should only use sysfs_emit() or sysfs_emit_at()
when formatting the value to be returned to user space.
Signed-off-by: Bo Liu <liubo03@xxxxxxxxxx>
---
drivers/block/null_blk/main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 4c601ca9552a..7b79cda53c81 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -255,18 +255,18 @@ static inline struct nullb_device *to_nullb_device(struct config_item *item)
static inline ssize_t nullb_device_uint_attr_show(unsigned int val, char *page)
{
- return snprintf(page, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(page, "%u\n", val);
}
static inline ssize_t nullb_device_ulong_attr_show(unsigned long val,
char *page)
{
- return snprintf(page, PAGE_SIZE, "%lu\n", val);
+ return sysfs_emit(page, "%lu\n", val);
}
static inline ssize_t nullb_device_bool_attr_show(bool val, char *page)
{
- return snprintf(page, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(page, "%u\n", val);
}
static ssize_t nullb_device_uint_attr_store(unsigned int *val,
@@ -627,7 +627,7 @@ nullb_group_drop_item(struct config_group *group, struct config_item *item)
static ssize_t memb_group_features_show(struct config_item *item, char *page)
{
- return snprintf(page, PAGE_SIZE,
+ return sysfs_emit(page,
"badblocks,blocking,blocksize,cache_size,"
"completion_nsec,discard,home_node,hw_queue_depth,"
"irqmode,max_sectors,mbps,memory_backed,no_sched,"
--
2.27.0
