[PATCH] nvme: work around all -Wformat-security warnings

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

The sysfs code passes two string variables into sysfs_emit(), which is safe
in this instance but causes the compiler to warn when -Wformat-security
is enabled:

host/sysfs.c: In function ‘cntrltype_show’:
host/sysfs.c:682:9: error: format not a string literal and no format arguments [-Werror=format-security]
   682 |         return sysfs_emit(buf, type[ctrl->cntrltype]);

Print these using a "%s" format like all other instances in the same file.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/nvme/host/sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/sysfs.c b/drivers/nvme/host/sysfs.c
index 02a2490a9ed7..e1e3dcfd084b 100644
--- a/drivers/nvme/host/sysfs.c
+++ b/drivers/nvme/host/sysfs.c
@@ -679,7 +679,7 @@ static ssize_t cntrltype_show(struct device *dev,
 	if (ctrl->cntrltype > NVME_CTRL_ADMIN || !type[ctrl->cntrltype])
 		return sysfs_emit(buf, "reserved\n");
 
-	return sysfs_emit(buf, type[ctrl->cntrltype]);
+	return sysfs_emit(buf, "%s", type[ctrl->cntrltype]);
 }
 static DEVICE_ATTR_RO(cntrltype);
 
@@ -696,7 +696,7 @@ static ssize_t dctype_show(struct device *dev,
 	if (ctrl->dctype > NVME_DCTYPE_CDC || !type[ctrl->dctype])
 		return sysfs_emit(buf, "reserved\n");
 
-	return sysfs_emit(buf, type[ctrl->dctype]);
+	return sysfs_emit(buf, "%s", type[ctrl->dctype]);
 }
 static DEVICE_ATTR_RO(dctype);
 
-- 
2.53.0