Re: [PATCH 1/2] platform: make platform_get_irq_optional() optional (summary) - Greg Kroah-Hartman

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: "Sergey Shtylyov" <s.shtylyov@omp.ru>,
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Subject: Re: [PATCH 1/2] platform: make platform_get_irq_optional() optional (summary)
Date: Sun, 16 Jan 2022 15:19:06 +0100	[thread overview]
Message-ID: <YeQpWu2sUVOSaT9I@kroah.com> (raw)
In-Reply-To: <20220115183643.6zxalxqxrhkfgdfq@pengutronix.de>

On Sat, Jan 15, 2022 at 07:36:43PM +0100, Uwe Kleine-König wrote:
> A possible compromise: We can have both. We rename
> platform_get_irq_optional() to platform_get_irq_silent() (or
> platform_get_irq_silently() if this is preferred) and once all users are
> are changed (which can be done mechanically), we reintroduce a
> platform_get_irq_optional() with Sergey's suggested semantic (i.e.
> return 0 on not-found, no error message printking).

Please do not do that as anyone trying to forward-port an old driver
will miss the abi change of functionality and get confused.  Make
build-breaking changes, if the way a function currently works is
changed in order to give people a chance.

thanks,

greg k-h