From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Date: Fri, 30 Oct 2015 20:08:05 +0000 (+0100)
Subject: ARM: 8450/1: v7-M: Use ret_to_user_from_irq in PendSV handler
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=440ee365d30adbcd9a97fba9cd629cedb7e9b7cb;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ARM: 8450/1: v7-M: Use ret_to_user_from_irq in PendSV handler

The PendSV handler calls v7m_exception_entry which
disables IRQs. Therefore, since IRQs are already disabled,
the PendSV handler can return using ret_to_user_from_irq.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index b6c8bb9315e7..907534f97053 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S
@@ -88,7 +88,7 @@ __pendsv_entry:
 	@ execute the pending work, including reschedule
 	get_thread_info tsk
 	mov	why, #0
-	b	ret_to_user
+	b	ret_to_user_from_irq
 ENDPROC(__pendsv_entry)
 
 /*