linux-kernel - [PATCH] rtc: at91sam: add 'depends on HAS

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Message-Id: <1520334491-7078-1-git-send-email-yamada.masahiro@socionext.com>
Date:   Tue,  6 Mar 2018 20:08:11 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        linux-rtc@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] rtc: at91sam: add 'depends on HAS_IOMEM' to fix unmet dependency

This config select's MFD_SYSCON, but does not depend on HAS_IOMEM.

Compile testing on architecture without HAS_IOMEM causes "unmet
direct dependencies" in Kconfig phase.

Detected by "make ARCH=score allyesconfig".

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Arnd Bergmann and I discussed how to fix unmet dependency of MFD_SYSCON.
https://lkml.org/lkml/2018/2/27/284

We agreed to add 'depends on HAS_IOMEM' to drivers causing
unmet dependency.


 drivers/rtc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 8ab5f0a5..d826e5d 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1413,6 +1413,7 @@ config RTC_DRV_AT91RM9200
 config RTC_DRV_AT91SAM9
 	tristate "AT91SAM9 RTT as RTC"
 	depends on ARCH_AT91 || COMPILE_TEST
+	depends on HAS_IOMEM
 	select MFD_SYSCON
 	help
 	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
-- 
2.7.4