2024-04-29 13:03:33

by Alexander Shishkin

Subject: [PATCH v1 07/15] intel_th: Convert sprintf/snprintf to sysfs_emit

From: Li Zhijian <[email protected]>

Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

sprintf() will be converted as weel if they have.

Generally, this patch is generated by
make coccicheck M=<path/to/file> MODE=patch \
COCCI=scripts/coccinelle/api/device_attr_show.cocci

No functional change intended

Signed-off-by: Li Zhijian <[email protected]>
Signed-off-by: Alexander Shishkin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
---
drivers/hwtracing/intel_th/gth.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c
index b3308934a687..3883f99fd5d5 100644
--- a/drivers/hwtracing/intel_th/gth.c
+++ b/drivers/hwtracing/intel_th/gth.c
@@ -154,9 +154,9 @@ static ssize_t master_attr_show(struct device *dev,
spin_unlock(&gth->gth_lock);

if (port >= 0)
- count = snprintf(buf, PAGE_SIZE, "%x\n", port);
+ count = sysfs_emit(buf, "%x\n", port);
else
- count = snprintf(buf, PAGE_SIZE, "disabled\n");
+ count = sysfs_emit(buf, "disabled\n");

return count;
}
@@ -332,8 +332,8 @@ static ssize_t output_attr_show(struct device *dev,
pm_runtime_get_sync(dev);

spin_lock(&gth->gth_lock);
- count = snprintf(buf, PAGE_SIZE, "%x\n",
- gth_output_parm_get(gth, oa->port, oa->parm));
+ count = sysfs_emit(buf, "%x\n",
+ gth_output_parm_get(gth, oa->port, oa->parm));
spin_unlock(&gth->gth_lock);

pm_runtime_put(dev);
--
2.43.0