misc: rp1: clear chained IRQ handlers on teardown

rp1_probe() installs a chained handler for each parent MSI-X vector and
stores the rp1 device pointer as handler data. rp1_unregister_interrupts()
then disposes the child IRQ mappings, removes the IRQ domain, and frees
the PCI IRQ vectors without first removing those chained handlers.

If a teardown path runs after the handlers have been installed, a later
parent IRQ can still call rp1_chained_handle_irq() with stale handler
data and a removed IRQ domain. Clear the chained handlers before
disposing mappings and freeing the vectors.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Andrea della Porta <andrea.porta@suse.com>
Link: https://patch.msgid.link/20260616151028.69890-1-pengpeng@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions