Re: [PATCH v2] spmi: hisi-spmi-controller: Fix kernel panic on rmmod

[Johan Hovold <johan@kernel.org>]

On Thu, Feb 29, 2024 at 12:35:23AM +0530, Vamshi Gajjela wrote:
> Ensure consistency in spmi_controller pointers between
> spmi_controller_remove/put and driver spmi_del_controller functions.
> The former requires a pointer to struct spmi_controller, while the
> latter passes a pointer of struct spmi_controller_dev, leading to a
> "Null pointer exception".
> 
> Signed-off-by: Vamshi Gajjela <vamshigajjela@google.com>
> Fixes: 70f59c90c819 ("staging: spmi: add Hikey 970 SPMI controller driver")
> Cc: stable@vger.kernel.org
> ---
> v2:
> - Split into two separate patches
> - add Fixes and Cc stable

You need to mark this patch more clearly as a stable backport (e.g.
using a "[PATCH-stable]" prefix), and explain that the corresponding
issue has already been fixed upstream by commits:

	490d88ef548d ("spmi: hisi-spmi-controller: Use devm_spmi_controller_add()")
	ffdfbafdc4f4 ("spmi: Use devm_spmi_controller_alloc()")

but that those commits (and their dependencies) are too intrusive to
backport.

Johan