[PATCH] mfd: syscon: Don't free allocated name for regmap_config
lee.jones at linaro.org
Mon Sep 28 05:19:49 EDT 2020
On Fri, 25 Sep 2020, Suman Anna wrote:
> On 9/24/20 7:39 AM, Lee Jones wrote:
> > On Thu, 03 Sep 2020, Marc Zyngier wrote:
> >> The name allocated for the regmap_config structure is freed
> >> pretty early, right after the registration of the MMIO region.
> >> Unfortunately, that doesn't follow the life cycle that debugfs
> >> expects, as it can access the name field long after the free
> >> has occured.
> >> Move the free on the error path, and keep it forever otherwise.
> >> Fixes: e15d7f2b81d2 ("mfd: syscon: Use a unique name with regmap_config")
> >> Signed-off-by: Marc Zyngier <maz at kernel.org>
> >> ---
> >> drivers/mfd/syscon.c | 2 +-
> >> 1 file changed, 1 insertion(+), 1 deletion(-)
> > Fixed the spelling mistake and applied, thanks.
> Can you recheck the behavior once on the latest master to see if this patch is
> still needed? I see a new patch within the regmap core that is dealing with the
> delayed debugfs registration name. This follows the similar design logic I
> suggested on your initial submission .
> Please see commit 94cc89eb8fa5 ("regmap: debugfs: Fix handling of name string
> for debugfs init delays") in mainline.
> I haven't seen this patch in -next yet, so maybe worthwhile to hold it a little
It's already applied.
If the lines become superfluous please submit a subsequent patch.
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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