[PATCH 2/2] soc: xilinx: Fix event manager CPU hotplug state cleanup
Prasanna Kumar T S M
ptsm at linux.microsoft.com
Tue Nov 3 07:18:55 PST 2026
Hi Jay,
On 03-11-2026 17:56, Jay Buddhabhatti wrote:
> Hi Prasanna,
>
> On Mon, Nov 02, 2026 at 10:35:15PM -0800, Prasanna Kumar T S M wrote:
> > On driver removal, the event manager removes the CPUHP_AP_ONLINE_DYN
> > CPU hotplug state instead of the its actual state. This can leave the
> > event manager callbacks dangling. Use the actual CPU hotplug state
> > during driver removal.
> >
> > Hotplug registration failures are also ignored, allowing probe to
> > succeed without the callbacks needed to enable event interrupts on
> > CPUs brought online later.
> >
> > Fixes: c7fdb2404f66 ("drivers: soc: xilinx: add xilinx event
> management driver")
> > Signed-off-by: Prasanna Kumar T S M ptsm at linux.microsoft.com
>
> This looks good to me.
>
> A couple of small nits:
>
> - "instead of the its actual state" -> "instead of its actual state"
Thanks for catching this.
> - Minor alignment on the cpuhp_setup_state() continuation lines;
> checkpatch --strict complains.
> CHECK: Alignment should match open parenthesis
> #49: FILE: drivers/soc/xilinx/xlnx_event_manager.c:663:
> + hp_state = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
> + "soc/event:starting", xlnx_event_cpuhp_start,
>
> total: 0 errors, 0 warnings, 1 checks, 44 lines checked
I missed this.
I think the issues are minor. Is it possible to fix this while merging
the patch?
>
> Worth Cc: stable at vger.kernel.org as well, given the Fixes tag.
Do I need to send v2 to address this?
>
> Reviewed-by: Jay Buddhabhatti <jay.buddhabhatti at amd.com>
>
> Thanks,
> Jay
Thanks,
Prasanna Kumar
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