[PATCH v2 07/20] irqchip/mmp: add missing chained_irq_{enter,exit}()
From: Lubomir Rintel <lkundrak@v3.sk>
Date: 2019-08-22 09:33:53
Also in:
linux-clk, linux-devicetree, lkml
Subsystem:
irqchip drivers, the rest · Maintainers:
Thomas Gleixner, Linus Torvalds
The lack of chained_irq_exit() leaves the muxed interrupt masked on MMP3. For reasons unknown this is not a problem on MMP2. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> --- Changes since v1: - Use irq_desc_get_chip() instead of irq_get_chip() drivers/irqchip/irq-mmp.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-mmp.c b/drivers/irqchip/irq-mmp.c
index e41e47ab71d3b..126ffdbffdddf 100644
--- a/drivers/irqchip/irq-mmp.c
+++ b/drivers/irqchip/irq-mmp.c@@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/irq.h> #include <linux/irqchip.h> +#include <linux/irqchip/chained_irq.h> #include <linux/irqdomain.h> #include <linux/io.h> #include <linux/ioport.h>
@@ -132,11 +133,14 @@ struct irq_chip icu_irq_chip = { static void icu_mux_irq_demux(struct irq_desc *desc) { unsigned int irq = irq_desc_get_irq(desc); + struct irq_chip *chip = irq_desc_get_chip(desc); struct irq_domain *domain; struct icu_chip_data *data; int i; unsigned long mask, status, n; + chained_irq_enter(chip, desc); + for (i = 1; i < max_icu_nr; i++) { if (irq == icu_data[i].cascade_irq) { domain = icu_data[i].domain;
@@ -146,7 +150,7 @@ static void icu_mux_irq_demux(struct irq_desc *desc) } if (i >= max_icu_nr) { pr_err("Spurious irq %d in MMP INTC\n", irq); - return; + goto out; } mask = readl_relaxed(data->reg_mask);
@@ -158,6 +162,9 @@ static void icu_mux_irq_demux(struct irq_desc *desc) generic_handle_irq(icu_data[i].virq_base + n); } } + +out: + chained_irq_exit(chip, desc); } static int mmp_irq_domain_map(struct irq_domain *d, unsigned int irq,
--
2.21.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel