linux-kernel - Re: [PATCH 0/4] Provide devm_clk_bulk_get_all

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Message-ID: <20240924143634.pqpdsewoqxn3liqi@thinkpad>
Date: Tue, 24 Sep 2024 16:36:34 +0200
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
Cc: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Russell King <linux@...linux.org.uk>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>, kernel@...labora.com,
	linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-pci@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 0/4] Provide devm_clk_bulk_get_all_enabled() helper

On Sat, Sep 14, 2024 at 09:04:53PM +0300, Cristian Ciocaltea wrote:
> Commit 265b07df758a ("clk: Provide managed helper to get and enable bulk
> clocks") added devm_clk_bulk_get_all_enable() function, but missed to
> return the number of clocks stored in the clk_bulk_data table referenced
> by the clks argument.
> 
> That is required in case there is a need to iterate these clocks later,
> therefore I couldn't see any use case of this parameter and should have
> been simply removed from the function declaration.
> 

Is there an user that currerntly does this?

- Mani

> The first patch in the series provides devm_clk_bulk_get_all_enabled()
> variant, which is consistent with devm_clk_bulk_get_all() in terms of
> the returned value:
> 
>  > 0 if one or more clocks have been stored
>  = 0 if there are no clocks
>  < 0 if an error occurred
> 
> Moreover, the naming is consistent with devm_clk_get_enabled(), i.e. use
> the past form of 'enable'.
> 
> The next two patches switch existing users of devm_clk_get_enable() to
> the new helper - there were only two, as of next-20240913.
> 
> The last patch drops the now obsolete devm_clk_bulk_get_all_enable()
> helper.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---
> Cristian Ciocaltea (4):
>       clk: Provide devm_clk_bulk_get_all_enabled() helper
>       soc: mediatek: pwrap: Switch to devm_clk_bulk_get_all_enabled()
>       PCI: exynos: Switch to devm_clk_bulk_get_all_enabled()
>       clk: Drop obsolete devm_clk_bulk_get_all_enable() helper
> 
>  drivers/clk/clk-devres.c                | 30 ++++++++++++++++--------------
>  drivers/pci/controller/dwc/pci-exynos.c |  2 +-
>  drivers/soc/mediatek/mtk-pmic-wrap.c    |  4 ++--
>  include/linux/clk.h                     | 12 +++++++-----
>  4 files changed, 26 insertions(+), 22 deletions(-)
> ---
> base-commit: 5acd9952f95fb4b7da6d09a3be39195a80845eb6
> change-id: 20240912-clk_bulk_ena_fix-16ba77358ddf
> 

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