2022-11-04 12:06:39

by Liu Peibao

Subject: [PATCH V2] irqchip: loongson-liointc: fix improper error handling in liointc_init()

For cores less than 4, eg, loongson2k1000 with 2 cores, the
of_property_match_string() may return with an error value,
which causes that liointc could not work. At least isr0 is
what should be checked like previous commit b2c4c3969fd7
("irqchip/loongson-liointc: irqchip add 2.0 version") did.

Fixes: 0858ed035a85 ("irqchip/loongson-liointc: Add ACPI init support")
Signed-off-by: Liu Peibao <[email protected]>
---
V1 -> V2: update commit log.

drivers/irqchip/irq-loongson-liointc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c
index 0da8716f8f24..c4584e2f0ad3 100644
--- a/drivers/irqchip/irq-loongson-liointc.c
+++ b/drivers/irqchip/irq-loongson-liointc.c
@@ -207,10 +207,13 @@ static int liointc_init(phys_addr_t addr, unsigned long size, int revision,
"reg-names", core_reg_names[i]);

if (index < 0)
- goto out_iounmap;
+ continue;

priv->core_isr[i] = of_iomap(node, index);
}
+
+ if (!priv->core_isr[0])
+ goto out_iounmap;
}

/* Setup IRQ domain */
--
2.20.1

2022-11-26 13:35:48

by tip-bot2 for Jacob Pan

Subject: [irqchip: irq/irqchip-next] irqchip/loongson-liointc: Fix improper error handling in liointc_init()

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID: 4a60a3cdcf1875c965095eb9e22c3d12bbc5a53d
Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/4a60a3cdcf1875c965095eb9e22c3d12bbc5a53d
Author: Liu Peibao <[email protected]>
AuthorDate: Fri, 04 Nov 2022 19:07:12 +08:00
Committer: Marc Zyngier <[email protected]>
CommitterDate: Sat, 26 Nov 2022 13:29:57

irqchip/loongson-liointc: Fix improper error handling in liointc_init()

For cores less than 4, eg, loongson2k1000 with 2 cores, the
of_property_match_string() may return with an error value,
which causes that liointc could not work. At least isr0 is
what should be checked like previous commit b2c4c3969fd7
("irqchip/loongson-liointc: irqchip add 2.0 version") did.

Fixes: 0858ed035a85 ("irqchip/loongson-liointc: Add ACPI init support")
Signed-off-by: Liu Peibao <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
drivers/irqchip/irq-loongson-liointc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c
index 0da8716..c4584e2 100644
--- a/drivers/irqchip/irq-loongson-liointc.c
+++ b/drivers/irqchip/irq-loongson-liointc.c
@@ -207,10 +207,13 @@ static int liointc_init(phys_addr_t addr, unsigned long size, int revision,
"reg-names", core_reg_names[i]);

if (index < 0)
- goto out_iounmap;
+ continue;

priv->core_isr[i] = of_iomap(node, index);
}
+
+ if (!priv->core_isr[0])
+ goto out_iounmap;
}

/* Setup IRQ domain */