linux-kernel - [PATCH v2] ARM: tegra: enforce PM requirement

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 26 Feb 2019 13:55:37 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <digetx@...il.com>, <linux@...linux.org.uk>, <jhogan@...nel.org>
CC:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <linux-kernel@...r.kernel.org>, Sameer Pujar <spujar@...dia.com>
Subject: [PATCH v2] ARM: tegra: enforce PM requirement

The requirement for this came while adding runtime PM support for HDA
driver. There were concerns about driver explicitly handling !PM case.
In general, drivers need to handle !PM case with work arounds for
managing clocks and power explicitly, which is not really necessary
when PM support on tegra is in good shape. In fact ARM 64-bit Tegra
platforms enforce PM support and there is no reason why this cannot be
done for 32-bit.

More details with regards to above can be found in following patch,
http://patchwork.ozlabs.org/patch/1036645/

This patch selects PM unconditionally and drivers can rely on runtime
PM framework for clock and power management.

Signed-off-by: Sameer Pujar <spujar@...dia.com>
Reviewed-by: Thierry Reding <treding@...dia.com>
Reviewed-by: Jonathan Hunter <jonathanh@...dia.com>
---
 arch/arm/mach-tegra/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 7f3b83e..51a8fa3 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -10,6 +10,7 @@ menuconfig ARCH_TEGRA
 	select HAVE_ARM_SCU if SMP
 	select HAVE_ARM_TWD if SMP
 	select PINCTRL
+	select PM
 	select PM_OPP
 	select ARCH_HAS_RESET_CONTROLLER
 	select RESET_CONTROLLER
-- 
2.7.4