[v3,-next] staging: fbtft: fix strncmp() size warning

Submitted by YueHaibing on Dec. 18, 2018, 2:28 p.m.

Details

Message ID 20181218142821.7484-1-yuehaibing@huawei.com
State New
Headers show
Series "staging: fbtft: fix strncmp() size warning" ( rev: 1 ) in DRI devel

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Commit Message

YueHaibing Dec. 18, 2018, 2:28 p.m.
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 <yuehaibing@huawei.com>
---
v2-v3: fix messed patch title
---
 drivers/staging/fbtft/fbtft_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch hide | download patch | download mbox

diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c
index 50e97da..046f9d3 100644
--- a/drivers/staging/fbtft/fbtft_device.c
+++ b/drivers/staging/fbtft/fbtft_device.c
@@ -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++)