From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp

---
 kernel/drivers/tty/serial/sunsab.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/kernel/drivers/tty/serial/sunsab.c b/kernel/drivers/tty/serial/sunsab.c
index 72131b5..bab551f 100644
--- a/kernel/drivers/tty/serial/sunsab.c
+++ b/kernel/drivers/tty/serial/sunsab.c
@@ -40,10 +40,6 @@
 #include <asm/prom.h>
 #include <asm/setup.h>
 
-#if defined(CONFIG_SERIAL_SUNSAB_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
 #include <linux/serial_core.h>
 #include <linux/sunserialcore.h>
 
@@ -890,7 +886,7 @@
 	 * though...
 	 */
 	if (up->port.type != PORT_SUNSAB)
-		return -1;
+		return -EINVAL;
 
 	printk("Console: ttyS%d (SAB82532)\n",
 	       (sunsab_reg.minor - 64) + con->index);
@@ -985,6 +981,7 @@
 
 	up->port.fifosize = SAB82532_XMIT_FIFO_SIZE;
 	up->port.iotype = UPIO_MEM;
+	up->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_SUNSAB_CONSOLE);
 
 	writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
 

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