From: Max Krummenacher <max.oss.09@gmail.com>
To: Max Krummenacher <max.oss.09@gmail.com>
Cc: Rouven Czerwinski <r.czerwinski@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-kernel@vger.kernel.org,
Russell King <linux@armlinux.org.uk>,
NXP Linux Team <linux-imx@nxp.com>,
Max Krummenacher <max.krummenacher@toradex.com>,
Ahmad Fatoum <a.fatoum@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
linux-arm-kernel@lists.infradead.org,
Lucas Stach <l.stach@pengutronix.de>
Subject: [PATCH 1/1] ARM: imx: build suspend-imx6.S with arm instruction set
Date: Mon, 11 Jan 2021 16:17:04 +0100 [thread overview]
Message-ID: <20210111151704.26296-2-max.krummenacher@toradex.com> (raw)
In-Reply-To: <20210111151704.26296-1-max.krummenacher@toradex.com>
When the kernel is configured to use the Thumb-2 instruction set
"suspend-to-memory" fails to resume. Observed on a Colibri iMX6ULL
(i.MX 6ULL) and Apalis iMX6 (i.MX 6Q).
It looks like the CPU resumes unconditionally in ARM instruction mode
and then chokes on the presented Thumb-2 code it should execute.
Fix this by using the arm instruction set for all code in
suspend-imx6.S.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
---
arch/arm/mach-imx/suspend-imx6.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-imx/suspend-imx6.S b/arch/arm/mach-imx/suspend-imx6.S
index 1eabf2d2834be..e06f946b75b96 100644
--- a/arch/arm/mach-imx/suspend-imx6.S
+++ b/arch/arm/mach-imx/suspend-imx6.S
@@ -67,6 +67,7 @@
#define MX6Q_CCM_CCR 0x0
.align 3
+ .arm
.macro sync_l2_cache
--
2.26.2
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next prev parent reply other threads:[~2021-01-11 15:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-11 15:17 [PATCH 0/1] ARM: imx: build suspend-imx6.S with arm instruction set Max Krummenacher
2021-01-11 15:17 ` Max Krummenacher [this message]
2021-01-11 17:38 ` [PATCH 1/1] " Oleksandr Suvorov
2021-01-11 17:49 ` Ahmad Fatoum
2021-01-11 18:30 ` Max Krummenacher
2021-01-18 6:45 ` Shawn Guo
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