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Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch')
-rw-r--r--target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch20
1 files changed, 20 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch b/target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch
new file mode 100644
index 0000000000..447f1ce085
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch
@@ -0,0 +1,20 @@
+From cc016c1876877aa42a84cc9c0c89af1b7410ff67 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 30 Jun 2015 14:12:42 +0100
+Subject: [PATCH] serial: 8250: Don't crash when nr_uarts is 0
+
+---
+ drivers/tty/serial/8250/8250_core.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/tty/serial/8250/8250_core.c
++++ b/drivers/tty/serial/8250/8250_core.c
+@@ -509,6 +509,8 @@ static void __init serial8250_isa_init_p
+
+ if (nr_uarts > UART_NR)
+ nr_uarts = UART_NR;
++ if (!nr_uarts)
++ return;
+
+ for (i = 0; i < nr_uarts; i++) {
+ struct uart_8250_port *up = &serial8250_ports[i];