[PATCH v4 5/6] drm/amdgpu/aca: Fix off-by-one buffer size parameter in add_aca_sysfs

[Sreeraj S Kurup <sreekuttan2156239@gmail.com>]

snprintf() guarantees NUL-termination within the size limit specified by
its second argument. Passing 'sizeof(handle->attr_name) - 1'
unnecessarily reduces the usable buffer capacity by one byte, causing
sysfs attribute names to be truncated early.

Pass 'sizeof(handle->attr_name)' directly to snprintf() in add_aca_sysfs()
to allow full use of the allocated buffer space.

Signed-off-by: Sreeraj S Kurup <sreekuttan2156239@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
index dcddeb381628..3da3d369a918 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
@@ -682,7 +682,7 @@ static int add_aca_sysfs(struct amdgpu_device *adev, struct aca_handle *handle)
 {
 	struct device_attribute *aca_attr = &handle->aca_attr;
 
-	snprintf(handle->attr_name, sizeof(handle->attr_name) - 1, "aca_%s", handle->name);
+	snprintf(handle->attr_name, sizeof(handle->attr_name), "aca_%s", handle->name);
 	aca_attr->show = aca_sysfs_read;
 	aca_attr->attr.name = handle->attr_name;
 	aca_attr->attr.mode = S_IRUGO;
-- 
2.54.0