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staging: fbtft: fix strncmp() size warning

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strncmp() stops comparing when either the end of one of the first two
arguments is reached or when 'n' characters have been compared, whichever
comes first.That means that strncmp(s1, s2, n) is equivalent to
strcmp(s1, s2) if n exceeds the length of s1 or the length of s2.

This patch avoids that the following warning is reported by smatch:

drivers/staging/fbtft/fbtft_device.c:1458
 fbtft_device_init() error: strncmp() '"list"' too small (5 vs 32)

Signed-off-by: YueHaibing <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
YueHaibing authored and Greg Kroah-Hartman committed 2018-12-19 08:29:28 +01:00
1 parent a86028f8e3
commit b57f944785
1 file changed
+1 -1
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drivers/staging/fbtft/fbtft_device.c
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@@ -1455,7 +1455,7 @@ static int __init fbtft_device_init(void)
}
/* name=list lists all supported displays */
if (strncmp(name, "list", FBTFT_GPIO_NAME_SIZE) == 0) {
if (strcmp(name, "list") == 0) {
pr_info("Supported displays:\n");
for (i = 0; i < ARRAY_SIZE(displays); i++)