Commit 54fb07d0 authored Aug 19, 2019 by Vasily Gorbik

s390/sclp: avoid using strncmp with hardcoded length



"earlyprintk" option documentation does not clearly state which
platform supports which additional values (e.g. ",keep"). Preserve old
option behaviour and reuse str_has_prefix instead of strncmp for prefix
testing.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

parent b29cd7c4

arch/s390/kernel/early_printk.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -25,7 +25,7 @@ static int __init setup_early_printk(char *buf)
		if (early_console)
		return 0;
		/* Accept only "earlyprintk" and "earlyprintk=sclp" */
		if (buf && strncmp(buf, "sclp", 4))
		if (buf && !str_has_prefix(buf, "sclp"))
		return 0;
		if (!sclp.has_linemode && !sclp.has_vt220)
		return 0;

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