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authorTakashi Iwai <tiwai@suse.de>2020-03-11 09:02:07 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-11 09:08:44 +0100
commit847e33867b65fdc4747a15646d1fdb94e65740a6 (patch)
tree74f66a850430f147dd32d0a5e65680ec59fc950c /drivers/base
parent4636a04630f632262e915f62deb59fa0f3ee5186 (diff)
drivers/base/cpu: Simplify s*nprintf() usages
Use the simpler sprintf() instead of snprintf() or scnprintf() in a single-shot sysfs output callbacks where you are very sure that it won't go over PAGE_SIZE buffer limit. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20200311080207.12046-3-tiwai@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/cpu.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 67aaa052c7a2..df19c002d747 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -231,8 +231,7 @@ static struct cpu_attr cpu_attrs[] = {
static ssize_t print_cpus_kernel_max(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n = snprintf(buf, PAGE_SIZE-2, "%d\n", NR_CPUS - 1);
- return n;
+ return sprintf(buf, "%d\n", NR_CPUS - 1);
}
static DEVICE_ATTR(kernel_max, 0444, print_cpus_kernel_max, NULL);
@@ -272,7 +271,7 @@ static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
static ssize_t print_cpus_isolated(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n = 0, len = PAGE_SIZE-2;
+ int n;
cpumask_var_t isolated;
if (!alloc_cpumask_var(&isolated, GFP_KERNEL))
@@ -280,7 +279,7 @@ static ssize_t print_cpus_isolated(struct device *dev,
cpumask_andnot(isolated, cpu_possible_mask,
housekeeping_cpumask(HK_FLAG_DOMAIN));
- n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(isolated));
+ n = sprintf(buf, "%*pbl\n", cpumask_pr_args(isolated));
free_cpumask_var(isolated);
@@ -292,11 +291,7 @@ static DEVICE_ATTR(isolated, 0444, print_cpus_isolated, NULL);
static ssize_t print_cpus_nohz_full(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int n = 0, len = PAGE_SIZE-2;
-
- n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(tick_nohz_full_mask));
-
- return n;
+ return sprintf(buf, "%*pbl\n", cpumask_pr_args(tick_nohz_full_mask));
}
static DEVICE_ATTR(nohz_full, 0444, print_cpus_nohz_full, NULL);
#endif