[PATCH v2 01/57] irqdomain: um: use irq_domain_create_linear() helper

[Jiri Slaby (SUSE)]

um_pci_init() open-codes what the irq_domain_create_linear() helper
does already. Use the helper instead of open-coding it.

This needs retval checking modification.

Signed-off-by: Jiri Slaby (SUSE) <jirisl...@kernel.org>
Cc: Richard Weinberger <rich...@nod.at>
Cc: Anton Ivanov <anton.iva...@cambridgegreys.com>
Cc: Johannes Berg <johan...@sipsolutions.net>
Cc: linux-um@lists.infradead.org

[v2]
This is new in v2.
---
 arch/um/drivers/virt-pci.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
index dd5580f975cc..efe8b474c07b 100644
--- a/arch/um/drivers/virt-pci.c
+++ b/arch/um/drivers/virt-pci.c
@@ -1000,11 +1000,6 @@ static struct resource virt_platform_resource = {
 
 static int __init um_pci_init(void)
 {
-       struct irq_domain_info inner_domain_info = {
-               .size           = MAX_MSI_VECTORS,
-               .hwirq_max      = MAX_MSI_VECTORS,
-               .ops            = &um_pci_inner_domain_ops,
-       };
        int err, i;
 
        WARN_ON(logic_iomem_add_region(&virt_cfgspace_resource,
@@ -1030,10 +1025,10 @@ static int __init um_pci_init(void)
                goto free;
        }
 
-       inner_domain_info.fwnode = um_pci_fwnode;
-       um_pci_inner_domain = irq_domain_instantiate(&inner_domain_info);
-       if (IS_ERR(um_pci_inner_domain)) {
-               err = PTR_ERR(um_pci_inner_domain);
+       um_pci_inner_domain = irq_domain_create_linear(um_pci_fwnode, 
MAX_MSI_VECTORS,
+                                                      
&um_pci_inner_domain_ops, NULL);
+       if (!um_pci_inner_domain) {
+               err = -ENOMEM;
                goto free;
        }
 
@@ -1070,7 +1065,7 @@ static int __init um_pci_init(void)
                goto free;
        return 0;
 free:
-       if (!IS_ERR_OR_NULL(um_pci_inner_domain))
+       if (um_pci_inner_domain)
                irq_domain_remove(um_pci_inner_domain);
        if (um_pci_fwnode)
                irq_domain_free_fwnode(um_pci_fwnode);
-- 
2.49.0