Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752812AbbBAInJ (ORCPT ); Sun, 1 Feb 2015 03:43:09 -0500 Received: from pandora.arm.linux.org.uk ([78.32.30.218]:40359 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751359AbbBAInG (ORCPT ); Sun, 1 Feb 2015 03:43:06 -0500 Date: Sun, 1 Feb 2015 08:42:45 +0000 From: Russell King - ARM Linux To: Finn Thain Cc: Geert Uytterhoeven , linux-m68k@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Rickard Strandqvist Subject: Re: nvram and generic_nvram modules are problematic, was Re: [PATCH] arch: m68k: mac: misc.c: Remove some unused functions Message-ID: <20150201084245.GF26493@n2100.arm.linux.org.uk> References: <1420131732-31039-1-git-send-email-rickard_strandqvist@spectrumdigital.se> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1069 Lines: 25 On Sun, Feb 01, 2015 at 02:39:42PM +1100, Finn Thain wrote: > I find the ARM support in drivers/char/nvram to be surprising, not to say > questionable. The /proc/driver/nvram implementation, given > defined(__arm__), decodes the NVRAM contents in exactly the same format as > when defined(__i386__) || defined(__x86_64__). That's because it's used on the Netwinder and EBSA285 platforms, which are PCI-like, complete with a southbridge which makes them look like a PC. > Whereas, only MIPS and > PowerPC defconfigs set CONFIG_RTC_DRV_CMOS at all, and without that symbol > the driver will never be built for ARM. This raises the question, does > /proc/driver/nvram do anything useful on any ARM platforms? Yes. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/