From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Tue, 19 Oct 2021 14:45:06 +0000 (+0200)
Subject: auxdisplay: linedisp: Use kmemdup_nul() helper
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=364f2c392f2b38ba3c52933f11a8dbee71f28864;p=linux.git

auxdisplay: linedisp: Use kmemdup_nul() helper

Use the existing kmemdup_nul() helper instead of open-coding the same
operation.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---

diff --git a/drivers/auxdisplay/line-display.c b/drivers/auxdisplay/line-display.c
index 4b97c20ac0b38..3f35199bc39f5 100644
--- a/drivers/auxdisplay/line-display.c
+++ b/drivers/auxdisplay/line-display.c
@@ -91,13 +91,10 @@ static int linedisp_display(struct linedisp *linedisp, const char *msg,
 		return 0;
 	}
 
-	new_msg = kmalloc(count + 1, GFP_KERNEL);
+	new_msg = kmemdup_nul(msg, count, GFP_KERNEL);
 	if (!new_msg)
 		return -ENOMEM;
 
-	memcpy(new_msg, msg, count);
-	new_msg[count] = 0;
-
 	kfree(linedisp->message);
 
 	linedisp->message = new_msg;