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
| ||
|
Message-ID: <20140722225125.GI28323@ld-irv-0074> Date: Tue, 22 Jul 2014 15:51:25 -0700 From: Brian Norris <computersforpeace@...il.com> To: Arnd Bergmann <arnd@...db.de> Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>, Russell King <linux@....linux.org.uk>, Dmitry Eremin-Solenikov <dbaryshkov@...il.com>, Christian Daudt <bcm@...thebug.org>, Linux Kernel <linux-kernel@...r.kernel.org>, Matt Porter <mporter@...aro.org>, Marc Carino <marc.ceeeee@...il.com>, Gregory Fong <gregory.0xf0@...il.com>, Olof Johansson <olof@...om.net>, David Woodhouse <dwmw2@...radead.org>, Sebastian Reichel <sre@...nel.org> Subject: Re: [PATCH v8 02/11] power: reset: Add reboot driver for brcmstb + Sebastian On Tue, Jul 22, 2014 at 11:02:07PM +0200, Arnd Bergmann wrote: > On Tuesday 22 July 2014 13:02:13 Brian Norris wrote: > > How about a third option, where we drop the 'select' statement and > > set POWER_RESET_BRCMSTB to be 'default y'? Then we don't have to modify > > the defconfig, and it gives the added bonus of choosing a sane default > > even if you're not based on the multi_v7_defconfig. i.e.: > > > > diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig > > index 58c01aed9752..634de7b7fd28 100644 > > --- a/arch/arm/mach-bcm/Kconfig > > +++ b/arch/arm/mach-bcm/Kconfig > > @@ -94,7 +94,6 @@ config ARCH_BRCMSTB > > select MIGHT_HAVE_PCI > > select HAVE_SMP > > select HAVE_ARM_ARCH_TIMER > > - select POWER_RESET_BRCMSTB > > select BRCMSTB_GISB_ARB > > select BRCMSTB_L2_IRQ > > help > > diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig > > index fcb9825debe5..ab5d57e2766d 100644 > > --- a/drivers/power/reset/Kconfig > > +++ b/drivers/power/reset/Kconfig > > @@ -23,6 +23,7 @@ config POWER_RESET_AXXIA > > config POWER_RESET_BRCMSTB > > bool "Broadcom STB reset driver" > > depends on POWER_RESET && ARCH_BRCMSTB > > + default y > > help > > This driver provides restart support for ARM-based Broadcom STB > > boards. > > I don't like this too much. Why do you want to allow disabling the > driver if you make it 'default y' in the first place? Not much of a reason, but I thought configurability is a positive. There's really not a good reason to not have this driver though; I can't imagine someone wanting to build our platform but not be able to reboot it. > We try to avoid 'default y' for user-selectable drivers in general. I didn't know that. A default is technically different than "should a user be able to disable this," but I suppose the policy makes sense. > I noticed that in my example, I was missing the default. I see. That's why I immediately ruled it out. > It should have been > > config POWER_RESET_BRCMSTB > bool "Broadcom STB reset driver" if COMPILE_TEST > depends on POWER_RESET && ARM > default ARCH_BRCMSTB OK, that's OK with me if it's OK with Sebastian, et al. Respin coming soon, separate from the mach-bcm and ARM stuff... (BTW, we might consider rewriting the other config entries to be similar, if we really want to make this things consistently nitpick-proof.) > This way, it always gets selected when ARCH_BRCMSTB is on and > COMPILE_TEST is off. With COMPILE_TEST enabled, it defaults to > ARCH_BRCMSTB but can be enabled or disabled for the purpose > of compile testing. Thanks, Brian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists