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Date:   Tue, 2 Oct 2018 17:41:39 +0200 (CEST)
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Feng Tang <feng.tang@intel.com>
cc:     Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@kernel.org>,
        H Peter Anvin <hpa@linux.intel.com>,
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Subject: Re: [PATCH v2] x86/earlyprintk: Add a force option for pciserial
 device
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On Tue, 2 Oct 2018, Feng Tang wrote:
> One idea is to change the new format to
> 	earlyprintk=pciserial[,force],bus:device.function[,baudrate]
> Then we can use what Boris has suggested:
> 	!strncmp(s, "force,", 6)

Works for me.