From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH] power: reset: reboot mode: fix build error of missing ioremap/iounmap on UM Date: Mon, 8 Aug 2016 18:54:10 +0200 Message-ID: <20160808165410.GA5959@kozik-book> References: <1470575661-22325-1-git-send-email-andy.yan@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <1470575661-22325-1-git-send-email-andy.yan@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org To: Andy Yan Cc: sre@kernel.org, richard@nod.at, matthias.bgg@gmail.com, moritz.fischer@ettus.com, fengguang.wu@intel.com, alexandre.belloni@free-electrons.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dbaryshkov@gmail.com, k.kozlowski@samsung.com, dwmw2@infradead.org, nicolas.ferre@atmel.com List-Id: linux-pm@vger.kernel.org On Sun, Aug 07, 2016 at 09:14:21PM +0800, Andy Yan wrote: > Add missing HAS_IOMEM dependency for MFD_SYSCON to fix the um-allyesconfig > build error: > > drivers/mfd/syscon.c: In function 'of_syscon_register': > drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap' [-Werror=implicit-function-declaration] > base = ioremap(res.start, resource_size(&res)); > ^ > drivers/mfd/syscon.c:67:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion] > base = ioremap(res.start, resource_size(&res)); > ^ > drivers/mfd/syscon.c:109:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration] > iounmap(base); > ^ > > Signed-off-by: Andy Yan Missing credits for reported by. That does not look proper... The driver itself is not using ioremap. Error is triggered by selecting MFD_SYSCON... Some time ago I sent a bulk of similar fixes for stuff like this but there were some comments against. Finally the fixes were merged but ultimately the COMPILE_TEST was changed to !UM. Here it happens even without COMPILE_TEST... Maybe it should just depend on MFD_SYSCON? Best regards, Krzysztof > --- > > drivers/power/reset/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig > index 7053abc..1388be3 100644 > --- a/drivers/power/reset/Kconfig > +++ b/drivers/power/reset/Kconfig > @@ -190,6 +190,7 @@ config REBOOT_MODE > config SYSCON_REBOOT_MODE > tristate "Generic SYSCON regmap reboot mode driver" > depends on OF > + depends on HAS_IOMEM > select REBOOT_MODE > select MFD_SYSCON > help > -- > 2.7.4 > >