This is a note to let you know that I've just added the patch titled
irqchip/loongson-eiointc: Fix return value checking of eiointc_index
to the 6.4-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-loongson-eiointc-fix-return-value-checking-o.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4db1955d890db95b838c0dad9cb734dc54106a24
Author: Bibo Mao <maobibo@xxxxxxxxxxx>
Date: Fri Aug 11 17:58:04 2023 +0800
irqchip/loongson-eiointc: Fix return value checking of eiointc_index
[ Upstream commit 2e99b73afde18853754c5fae8e8d1a66fe5e3f64 ]
Return value of function eiointc_index is int, however it is converted
into uint32_t and then compared smaller than zero, this will cause logic
problem.
Fixes: dd281e1a1a93 ("irqchip: Add Loongson Extended I/O interrupt controller support")
Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx>
Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230811095805.2974722-2-maobibo@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index a7fcde3e3ecc7..ae28918df5c59 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -143,7 +143,7 @@ static int eiointc_router_init(unsigned int cpu)
int i, bit;
uint32_t data;
uint32_t node = cpu_to_eio_node(cpu);
- uint32_t index = eiointc_index(node);
+ int index = eiointc_index(node);
if (index < 0) {
pr_err("Error: invalid nodemap!\n");
