Documentation: freefall: simplify pathnames

Copying to local variable is actually not neccessary, if all we need
to do is snprintf(). This also removes problem where devname could be
missing zero termination.

Reported-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 5 deletions

diff --git a/Documentation/laptops/freefall.c b/Documentation/laptops/freefall.c
index d4173186555c..5e44b20b1848 100644
--- a/Documentation/laptops/freefall.c
+++ b/Documentation/laptops/freefall.c
@@ -29,16 +29,12 @@ static const char app_name[] = "FREE FALL";
 
 static int set_unload_heads_path(char *device)
 {
-        char devname[64];
-
         if (strlen(device) <= 5 || strncmp(device, "/dev/", 5) != 0)
                 return -EINVAL;
-        strncpy(devname, device + 5, sizeof(devname) - 1);
-        devname[sizeof(devname) - 1] = '\0';
         strncpy(device_path, device, sizeof(device_path) - 1);
 
         snprintf(unload_heads_path, sizeof(unload_heads_path) - 1,
-                                "/sys/block/%s/device/unload_heads", devname);
+                                "/sys/block/%s/device/unload_heads", device+5);
         return 0;
 }