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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: Simon Horman <horms@verge.net.au>,
	Magnus Damm <magnus.damm@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	Ofir Drang <ofir.drang@arm.com>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-clk <linux-clk@vger.kernel.org>,
	Linux Crypto Mailing List <linux-crypto@vger.kernel.org>
Subject: Re: [PATCH 3/3] arm64: dts: renesas: r8a7795: add ccree binding
Date: Tue, 22 May 2018 09:48:06 +0200	[thread overview]
Message-ID: <CAMuHMdX-t8WfjRKpZ7UxXBbBNojsn-8z7_BM9grmLJcf=9Ks2Q@mail.gmail.com> (raw)
In-Reply-To: <CAOtvUMcf-fHduThORv3cbcN16wEm_Si27OjSjAmSc9g5eK4PJw@mail.gmail.com>

Hi Gilad,

On Mon, May 21, 2018 at 3:43 PM, Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> On Thu, May 17, 2018 at 1:16 PM, Geert Uytterhoeven
> <geert@linux-m68k.org> wrote:
>> Indeed. From a quick glance, it looks like drivers/crypto/ccree/cc_driver.c
>> does not distinguish between the absence of the clock property, and an
>> actual error in getting the clock, and never considers any error a failure
>> (incl. -PROBE_DEFER).
>>
>> As of_clk_get() returns -ENOENT for both a missing clock property and a
>> missing clock, you should use (devm_)clk_get() instead, and distinguish
>> between NULL (no clock property) and IS_ERR() (actual failure -> abort).
>
> I was trying to do as you suggested but I didn't quite get what is the
> dev_id (2nd) parameter to devm_clk_get parameter is supposed to be.

It's the (optional) name of the clock, helpful in case there is more than one.
In your case, NULL is fine.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2018-05-22  7:48 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-15 12:29 [PATCH 0/3] enable ccree on Renesas R-Car platform Gilad Ben-Yossef
2018-05-15 12:29 ` [PATCH 1/3] crypto: ccree: drop signature register check Gilad Ben-Yossef
2018-05-17 12:54   ` Gilad Ben-Yossef
2018-05-15 12:29 ` [PATCH 2/3] clk: renesas: r8a7795: Add ccree clock Gilad Ben-Yossef
2018-05-15 14:47   ` Geert Uytterhoeven
2018-05-17  8:00     ` Gilad Ben-Yossef
2018-05-17  8:41       ` Geert Uytterhoeven
2018-05-15 12:29 ` [PATCH 3/3] arm64: dts: renesas: r8a7795: add ccree binding Gilad Ben-Yossef
2018-05-15 14:50   ` Geert Uytterhoeven
2018-05-16  7:43     ` Simon Horman
2018-05-17  8:01       ` Gilad Ben-Yossef
2018-05-17  9:04         ` Simon Horman
2018-05-17 13:12           ` Gilad Ben-Yossef
2018-05-18  9:50             ` Simon Horman
2018-05-17 10:16         ` Geert Uytterhoeven
2018-05-17 13:09           ` Gilad Ben-Yossef
2018-05-17 13:35             ` Geert Uytterhoeven
2018-05-17 13:41               ` Gilad Ben-Yossef
2018-05-17 13:49                 ` Geert Uytterhoeven
2018-05-17 13:17           ` Geert Uytterhoeven
2018-05-21 13:43           ` Gilad Ben-Yossef
2018-05-22  7:48             ` Geert Uytterhoeven [this message]
2018-05-24 13:20               ` Gilad Ben-Yossef
2018-05-24 13:44                 ` Geert Uytterhoeven

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