From: Max Krummenacher <max.oss.09@gmail.com> To: Max Krummenacher <max.oss.09@gmail.com> Cc: Max Krummenacher <max.krummenacher@toradex.com>, Lucas Stach <l.stach@pengutronix.de>, linux-arm-kernel@lists.infradead.org, Fabio Estevam <festevam@gmail.com>, Rouven Czerwinski <r.czerwinski@pengutronix.de>, linux-kernel@vger.kernel.org, Ahmad Fatoum <a.fatoum@pengutronix.de>, Pengutronix Kernel Team <kernel@pengutronix.de>, Sascha Hauer <s.hauer@pengutronix.de>, Russell King <linux@armlinux.org.uk>, Shawn Guo <shawnguo@kernel.org>, NXP Linux Team <linux-imx@nxp.com> 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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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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-11 15:17 UTC|newest] Thread overview: 12+ 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 2021-01-11 15:17 ` Max Krummenacher [this message] 2021-01-11 15:17 ` [PATCH 1/1] " Max Krummenacher 2021-01-11 17:38 ` Oleksandr Suvorov 2021-01-11 17:38 ` Oleksandr Suvorov 2021-01-11 17:49 ` Ahmad Fatoum 2021-01-11 17:49 ` Ahmad Fatoum 2021-01-11 18:30 ` Max Krummenacher 2021-01-11 18:30 ` Max Krummenacher 2021-01-18 6:45 ` Shawn Guo 2021-01-18 6:45 ` Shawn Guo
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