linux-kernel - [PATCH 2/2] char: genrtc: replace blacklist with whitelist

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Message-Id: <1456912137-1578635-2-git-send-email-arnd@arndb.de>
Date:	Wed,  2 Mar 2016 10:48:51 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-arm-kernel@...ts.infradead.org, rtc-linux@...glegroups.com,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] char: genrtc: replace blacklist with whitelist

Every new architecture has to add itself to the growing list of those
that do not support the old "generic" RTC driver.

This replaces the long list of architectures that don't support it
with a shorter list of those that do.

The list is taken from those architectures that have a non-empty
asm/rtc.h header file and were not explicitly blacklisted.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/char/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 9716bc36495a..629f1ff389b6 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -327,7 +327,8 @@ config JS_RTC
 
 config GEN_RTC
 	tristate "Generic /dev/rtc emulation"
-	depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32 && !BLACKFIN && !UML
+	depends on RTC!=y
+	depends on ALPHA || M68K || MN10300 || PARISC || PPC || X86
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you
-- 
2.7.0