linux-kernel - Re: [PATCH] Kernel debugging: omap: print warning if CONFIG_DEBUG

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Date:   Wed, 8 Nov 2017 22:38:10 +0000
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Tony Lindgren <tony@...mide.com>
Cc:     letux-kernel@...nphoenux.org,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        linux-kernel@...r.kernel.org, kernel@...a-handheld.com,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] Kernel debugging: omap: print warning if CONFIG_DEBUG_LL
 is enabled

On Wed, Nov 08, 2017 at 10:36:04PM +0000, Russell King - ARM Linux wrote:
> We don't need a compiler warning there, we probably need better help
> text against DEBUG_LL and against EARLY_PRINTK.

Actually, this is already clearly stated against DEBUG_LL:

          Note that selecting this option will limit the kernel to a single
          UART definition, as specified below. Attempting to boot the kernel
          image on a different platform *will not work*, so this option should
          not be enabled for kernels that are intended to be portable.

and since EARLY_PRINTK depends on DEBUG_LL... I guess people don't
read help texts anymore.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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