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 4.19-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-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 755959e2b1af22abbf5a264c0407266b6eac9750
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 6b58194c1e346..2e0478e8be747 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -2958,8 +2958,6 @@ 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;
