diff mbox series

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

Message ID 20221104110712.23300-1-liupeibao@loongson.cn
State New
Headers
Series [V2] irqchip: loongson-liointc: fix improper error handling in liointc_init() |

Commit Message

Liu Peibao Nov. 4, 2022, 11:07 a.m. UTC 
  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 <liupeibao@loongson.cn>
---
V1 -> V2: update commit log.

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

Patch

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 */