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Documentation: freefall: simplify pathnames

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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 <[email protected]>
Signed-off-by: Pavel Machek <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Pavel Machek 2014-08-05 23:32:41 -07:00 • committed by Linus Torvalds
commit d74aae4ea0
1 changed files with 1 additions and 5 deletions
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6
Documentation/laptops/freefall.c
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@ -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;
}