Patch "irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     irqchip-gic-v3-its-remove-bug_on-in-its_vpe_irq_doma.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 8dbd60e2c4d90ec587323a89afe1f24e9858ee30
Author: Guanrui Huang <guanrui.huang@xxxxxxxxxxxxxxxxx>
Date:   Thu Apr 18 14:10:53 2024 +0800

    irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc
    
    [ Upstream commit 382d2ffe86efb1e2fa803d2cf17e5bfc34e574f3 ]
    
    This BUG_ON() is useless, because the same effect will be obtained
    by letting the code run its course and vm being dereferenced,
    triggering an exception.
    
    So just remove this check.
    
    Signed-off-by: Guanrui Huang <guanrui.huang@xxxxxxxxxxxxxxxxx>
    Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    Reviewed-by: Zenghui Yu <yuzenghui@xxxxxxxxxx>
    Acked-by: Marc Zyngier <maz@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240418061053.96803-3-guanrui.huang@xxxxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index c7d6e6987166f..350abbb36e04b 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -4501,8 +4501,6 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq
 	struct page *vprop_page;
 	int base, nr_ids, i, err = 0;
 
-	BUG_ON(!vm);
-
 	bitmap = its_lpi_alloc(roundup_pow_of_two(nr_irqs), &base, &nr_ids);
 	if (!bitmap)
 		return -ENOMEM;




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