21 lines
609 B
Diff
21 lines
609 B
Diff
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From 0059a02a50c6d01a399024cad56ec5254c645fd0 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 30 Jun 2015 14:12:42 +0100
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Subject: [PATCH] serial: 8250: Don't crash when nr_uarts is 0
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---
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drivers/tty/serial/8250/8250_core.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/drivers/tty/serial/8250/8250_core.c
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+++ b/drivers/tty/serial/8250/8250_core.c
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@@ -509,6 +509,8 @@ static void __init serial8250_isa_init_p
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if (nr_uarts > UART_NR)
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nr_uarts = UART_NR;
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+ if (!nr_uarts)
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+ return;
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for (i = 0; i < nr_uarts; i++) {
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struct uart_8250_port *up = &serial8250_ports[i];
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