linux-kernel - Re: [PATCH 6/9] clk: socfpga: Don't reference clk_init

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Message-Id: <20190801161321.4D0A9206A3@mail.kernel.org>
Date:   Thu, 01 Aug 2019 09:13:20 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Dinh Nguyen <dinguyen@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH 6/9] clk: socfpga: Don't reference clk_init_data after registration

Quoting Dinh Nguyen (2019-08-01 08:12:58)
> Hi Stephen,
> 
> On 7/31/19 2:35 PM, Stephen Boyd wrote:
> > A future patch is going to change semantics of clk_register() so that
> > clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
> > referencing this member here so that we don't run into NULL pointer
> > exceptions.
> > 
> > Cc: Dinh Nguyen <dinguyen@...nel.org>
> > Signed-off-by: Stephen Boyd <sboyd@...nel.org>
> > ---
> > 
> > Please ack so I can take this through clk tree
> > 
> >  drivers/clk/socfpga/clk-gate.c       | 21 +++++++++++----------
> >  drivers/clk/socfpga/clk-periph-a10.c |  7 ++++---
> >  2 files changed, 15 insertions(+), 13 deletions(-)
> > 
> > diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c
> > index 3966cd43b552..b3c8143909dc 100644
> > --- a/drivers/clk/socfpga/clk-gate.c
> > +++ b/drivers/clk/socfpga/clk-gate.c
> > @@ -31,20 +31,20 @@ static u8 socfpga_clk_get_parent(struct clk_hw *hwclk)
> >       u32 l4_src;
> >       u32 perpll_src;
> 
> You need this line here:
> 
>         const char *name = clk_hw_get_name(hwclk);
> 
> Otherwise, it fails to build. With the above change:
> 
> Acked-by: Dinh Nguyen <dinguyen@...nel.org>

Awesome thanks!