Thread (13 messages) flat view 13 messages, 4 authors, 2015-08-10
STALE4050d

[patch] fbdev: off by one test (harmless)

From: Dan Carpenter <hidden>
Date: 2014-12-26 17:26:57
Also in: kernel-janitors
Subsystem: framebuffer core, framebuffer layer, the rest · Maintainers: Simona Vetter, Helge Deller, Linus Torvalds

ARRAY_SIZE(cea_modes) is 64 so the "idx > 63" test earlier means this
test is really a no-op.  But it's still off by one and upsets the static
checkers so we may as well correct it.

Signed-off-by: Dan Carpenter <redacted>
diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c
index 5b0e313..3030269 100644
--- a/drivers/video/fbdev/core/fbmon.c
+++ b/drivers/video/fbdev/core/fbmon.c
@@ -1061,7 +1061,7 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs)
 		int idx = svd[i - specs->modedb_len - num];
 		if (!idx || idx > 63) {
 			pr_warning("Reserved SVD code %d\n", idx);
-		} else if (idx > ARRAY_SIZE(cea_modes) || !cea_modes[idx].xres) {
+		} else if (idx >= ARRAY_SIZE(cea_modes) || !cea_modes[idx].xres) {
 			pr_warning("Unimplemented SVD code %d\n", idx);
 		} else {
 			memcpy(&m[i], cea_modes + idx, sizeof(m[i]));
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