add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/s390/kernel/early_printk.c
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@@ -10,7 +10,7 @@
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 static void sclp_early_write(struct console *con, const char *s, unsigned int len)
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 {
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-	__sclp_early_printk(s, len, 0);
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+	__sclp_early_printk(s, len);
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 }
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 static struct console sclp_early_console = {
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@@ -25,7 +25,7 @@
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 	if (early_console)
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 		return 0;
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 	/* Accept only "earlyprintk" and "earlyprintk=sclp" */
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-	if (buf && strncmp(buf, "sclp", 4))
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+	if (buf && !str_has_prefix(buf, "sclp"))
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 		return 0;
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 	if (!sclp.has_linemode && !sclp.has_vt220)
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 		return 0;