[xen master] xen/arm: irq: add missing spin_unlock() in init_local_irq_data() error path

[patchbot@xxxxxxx]

commit 4c3aa6e93d3fc760bdcb9cf268f506c06c0639b2
Author:     Mykola Kvach <mykola_kvach@xxxxxxxx>
AuthorDate: Mon Aug 11 11:45:20 2025 +0300
Commit:     Julien Grall <jgrall@xxxxxxxxxx>
CommitDate: Tue Aug 12 12:04:41 2025 +0100

    xen/arm: irq: add missing spin_unlock() in init_local_irq_data() error path
    
    If init_one_irq_desc() fails, init_local_irq_data() returns without
    releasing local_irqs_type_lock, leading to a possible deadlock.
    
    Release the lock before returning to ensure proper cleanup.
    
    Fixes: 2bb32b809250 ("xen/irq: Propagate the error from init_one_desc_irq() 
in init_*_irq_data()")
    Signed-off-by: Mykola Kvach <mykola_kvach@xxxxxxxx>
    Reviewed-by: Denis Mukhin <dmukhin@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 xen/arch/arm/irq.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 4bbf0b0664..02ca82c089 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -94,7 +94,10 @@ static int init_local_irq_data(unsigned int cpu)
         int rc = init_one_irq_desc(desc);
 
         if ( rc )
+        {
+            spin_unlock(&local_irqs_type_lock);
             return rc;
+        }
 
         desc->irq = irq;
         desc->action  = NULL;
--
generated by git-patchbot for /home/xen/git/xen.git#master