irqchip/gic-v5: Install root IRQ handler last in gicv5_init_common()

set_handle_irq() cannot be undone: once a handler is installed, any
further call returns -EBUSY, so the set_handle_irq(NULL) in the error
path has never worked.  Drop it, and install the root handler only
after gicv5_irs_enable() has succeeded.

set_handle_irq() only fails if another root handler is already
installed, which cannot happen on a GICv5 system.  Should it ever
fail, the system is unusable: panic instead of unwinding.

Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/87fqzrmywu.wl-maz@kernel.org
Link: https://patch.msgid.link/20260903104014.587068-1-yijiangshan@kylinos.cn

0 files changed, 0 insertions, 0 deletions