From: Kevin Hilman <khilman@ti.com>
Date: Tue, 13 Sep 2011 18:18:44 +0000 (-0700)
Subject: OMAP3: PM: fix UART handling when using no_console_suspend
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dca2d0eb5917ff132d9be13f0afa9ae5d4e80580;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

OMAP3: PM: fix UART handling when using no_console_suspend

During the idle/suspend path, we expect the console lock to be held so
that no console output is done during/after the UARTs are idled.

However, when using the no_console_suspend argument on the
command-line, the console driver does not take the console lock.  This
allows the possibility of console activity after UARTs have been
disabled.

To fix, update the current is_suspending() to also check the
console_suspend_enabled flag.

Reported-by: Abhilash Koyamangalath <abhilash.kv@ti.com>
Tested-by: Abhilash Koyamangalath <abhilash.kv@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
---

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 7255d9bce86..c8cbd00a41a 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -55,7 +55,7 @@
 static suspend_state_t suspend_state = PM_SUSPEND_ON;
 static inline bool is_suspending(void)
 {
-	return (suspend_state != PM_SUSPEND_ON);
+	return (suspend_state != PM_SUSPEND_ON) && console_suspend_enabled;
 }
 #else
 static inline bool is_suspending(void)