Re: [PATCH v2] clk: Skip clk provider registration when np is NULL

[nicolas saenz julienne]

On Mon, 2021-04-26 at 09:56 +0300, Tudor Ambarus wrote:
> commit 6579c8d97ad7 ("clk: Mark fwnodes when their clock provider is added")
> revealed that clk/bcm/clk-raspberrypi.c driver calls
> devm_of_clk_add_hw_provider(), with a NULL dev->of_node, which resulted in a
> NULL pointer dereference in of_clk_add_hw_provider() when calling
> fwnode_dev_initialized().
> 
> Returning 0 is reducing the if conditions in driver code and is being
> consistent with the CONFIG_OF=n inline stub that returns 0 when CONFIG_OF
> is disabled. The downside is that drivers will maybe register clkdev lookups
> when they don't need to and waste some memory.
> 
> Reported-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> Fixes: 6579c8d97ad7 ("clk: Mark fwnodes when their clock provider is added")
> Fixes: 3c9ea42802a1 ("clk: Mark fwnodes when their clock provider is added/removed")
> Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
> Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxx>
> ---

Reviewed-by: Nicolas Saenz Julienne <nsaenz@xxxxxxxxxx>

Regards,
Nicolas