target/linux/bcm27xx/patches-6.1/950-1246-fixup-irqchip-irq-bcm2712-mip-Support-for-2712-s-MIP.patch

   1 From 3bb5880ab3dd31f75c07c3c33bf29c5d469b28f3 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 18 Jan 2024 15:41:21 +0000
   4 Subject: [PATCH] fixup! irqchip: irq-bcm2712-mip: Support for 2712's MIP
   5
   6 Use irq_domain_add_hierarchy so that the root pointer is initialised
   7 correctly. Failure to do so leads to (at least) lockdep warnings when
   8 they are enabled.
   9
  10 See: https://github.com/raspberrypi/linux/issues/5866
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  13 ---
  14  drivers/irqchip/irq-bcm2712-mip.c | 8 +++-----
  15  1 file changed, 3 insertions(+), 5 deletions(-)
  16
  17 --- a/drivers/irqchip/irq-bcm2712-mip.c
  18 +++ b/drivers/irqchip/irq-bcm2712-mip.c
  19 @@ -209,16 +209,14 @@ static int mip_init_domains(struct mip_p
  20                 return -ENXIO;
  21         }
  22
  23 -       middle_domain = irq_domain_add_tree(NULL,
  24 -                                           &mip_irq_domain_ops,
  25 -                                           priv);
  26 +       middle_domain = irq_domain_add_hierarchy(gic_domain, 0, 0, NULL,
  27 +                                                &mip_irq_domain_ops,
  28 +                                                priv);
  29         if (!middle_domain) {
  30                 pr_err("Failed to create the MIP middle domain\n");
  31                 return -ENOMEM;
  32         }
  33
  34 -       middle_domain->parent = gic_domain;
  35 -
  36         msi_domain = pci_msi_create_irq_domain(of_node_to_fwnode(node),
  37                                                &mip_msi_domain_info,
  38                                                middle_domain);