linux-kernel - Re: [PATCH 0/7] clk: at91: sckc: improve error path

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Date:   Tue, 18 Jun 2019 11:55:21 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Claudiu.Beznea@...rochip.com
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        Nicolas.Ferre@...rochip.com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        claudiu.beznea@...il.com
Subject: Re: [PATCH 0/7] clk: at91: sckc: improve error path

On 13/06/2019 15:37:06+0000, Claudiu.Beznea@...rochip.com wrote:
> From: Claudiu Beznea <claudiu.beznea@...rochip.com>
> 
> Hi,
> 
> This series tries to improve error path for slow clock registrations
> by adding functions to free resources and using them on failures.
> 

Does the platform even boot when the slow clock is not available? 

The TCB clocksource would fail at:

        tc.slow_clk = of_clk_get_by_name(node->parent, "slow_clk");
        if (IS_ERR(tc.slow_clk))
                return PTR_ERR(tc.slow_clk);


> It is created on top of patch series at [1].
> 
> Thank you,
> Claudiu Beznea
> 
> [1] https://lore.kernel.org/lkml/1558433454-27971-1-git-send-email-claudiu.beznea@microchip.com/
> 
> Claudiu Beznea (7):
>   clk: at91: sckc: add support to free slow oscillator
>   clk: at91: sckc: add support to free slow rc oscillator
>   clk: at91: sckc: add support to free slow clock osclillator
>   clk: at91: sckc: improve error path for sam9x5 sck register
>   clk: at91: sckc: remove unnecessary line
>   clk: at91: sckc: improve error path for sama5d4 sck registration
>   clk: at91: sckc: use dedicated functions to unregister clock
> 
>  drivers/clk/at91/sckc.c | 122 ++++++++++++++++++++++++++++++++++--------------
>  1 file changed, 86 insertions(+), 36 deletions(-)
> 
> -- 
> 2.7.4
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com