[PATCH] clk: handle NULL args in clk_set_parent()

[Sascha Hauer]

On Thu, May 12, 2022 at 10:54:37AM +0200, Bastian Krause wrote:
> Hi Sascha,
> 
> On 5/12/22 09:03, Sascha Hauer wrote:
> > On Wed, May 11, 2022 at 12:09:11PM +0200, Bastian Krause wrote:
> > > NULL struct clk pointers should be treated just as the Linux kernel clk
> > > driver does [1]. The reasoning should also apply to the parent clk
> > > argument.
> > > 
> > > A NULL struct clk pointer can happen for example on the Freescale i.MX6
> > > SABRE Smart Device Board if CONFIG_DRIVER_VIDEO_IMX_IPUV3 is disabled,
> > > leading to assigned-clocks IMX6QDL_CLK_LDB_DI0_SEL and
> > > IMX6QDL_CLK_LDB_DI1_SEL [2] being unavailable. Without this patch, the
> > > board hangs while setting those assigned clock configurations since [3].
> > > 
> > > [1] 89ac8d7ae1cd ("clk: handle NULL struct clk gracefully")
> > > [2] dts/src/arm/imx6qdl-sabresd.dtsi
> > > [3] f5eb5fddb4 ("clk: fix of clk set defaults when dev is a clk provider")
> > > 
> > > Signed-off-by: Bastian Krause <bst at pengutronix.de>
> > > ---
> > >   drivers/clk/clk.c | 7 ++++++-
> > >   1 file changed, 6 insertions(+), 1 deletion(-)
> > 
> > Applied, thanks
> 
> Did you see the v2 of this patch?

Yes, but still I accidently applied v1 and then fixed it up to v2 :/

Sascha

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