From: Biju Das Date: Sat, 28 Mar 2026 10:33:18 +0000 (+0000) Subject: irqchip/renesas-rzg2l: Clear the shared interrupt bit in rzg2l_irqc_free() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d3689cd02c5de52ff5f3044169c482aee0dd5a78;p=thirdparty%2Flinux.git irqchip/renesas-rzg2l: Clear the shared interrupt bit in rzg2l_irqc_free() rzg2l_irqc_free() invokes irq_domain_free_irqs_common(), which internally calls irq_domain_reset_irq_data(). That explicitly sets irq_data->hwirq to 0. Consequently, irqd_to_hwirq(d) returns 0 when called after it. Since 0 falls outside the valid shared IRQ ranges, rzg2l_irqc_is_shared_and_get_irq_num() evaluates to false, completely bypassing the test_and_clear_bit() operation. This leaves the bit set in priv->used_irqs, causing future allocations to fail with -EBUSY. Fix this by retrieving irq_data and caching hwirq before calling irq_domain_free_irqs_common(). Fixes: e0fcae27ff57 ("irqchip/renesas-rzg2l: Add shared interrupt support") Signed-off-by: Biju Das Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260328103324.134131-2-biju.das.jz@bp.renesas.com --- diff --git a/drivers/irqchip/irq-renesas-rzg2l.c b/drivers/irqchip/irq-renesas-rzg2l.c index 755fac39de0ca..199b3c6b02c87 100644 --- a/drivers/irqchip/irq-renesas-rzg2l.c +++ b/drivers/irqchip/irq-renesas-rzg2l.c @@ -698,15 +698,14 @@ shared_irq_free: static void rzg2l_irqc_free(struct irq_domain *domain, unsigned int virq, unsigned int nr_irqs) { + struct irq_data *d = irq_domain_get_irq_data(domain, virq); struct rzg2l_irqc_priv *priv = domain->host_data; + irq_hw_number_t hwirq = irqd_to_hwirq(d); irq_domain_free_irqs_common(domain, virq, nr_irqs); - if (priv->info.shared_irq_cnt) { - struct irq_data *d = irq_domain_get_irq_data(domain, virq); - - rzg2l_irqc_shared_irq_free(priv, irqd_to_hwirq(d)); - } + if (priv->info.shared_irq_cnt) + rzg2l_irqc_shared_irq_free(priv, hwirq); } static const struct irq_domain_ops rzg2l_irqc_domain_ops = {