LoongArch inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9V21T CVE: NA

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When we boot Loongson-TC542F0 3C5000 4-Node dual bridge machine, boot failed with no root partition found. The reason is HT RX INT TRANS register not initialized, So we initialize it.

Fixes: db5bb24abc8d ("LoongArch: Old BPI compatibility") Reported-by: Qianwen Li liqianwen@loongson.cn Signed-off-by: Hongchen Zhang zhanghongchen@loongson.cn --- arch/loongarch/kernel/irq.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c index 8b21449a7092..a2f6ce3061f3 100644 --- a/arch/loongarch/kernel/irq.c +++ b/arch/loongarch/kernel/irq.c @@ -127,6 +127,13 @@ void __init init_IRQ(void) int i, ret; unsigned int order = get_order(IRQ_STACK_SIZE); struct page *page; + unsigned long node; + + if (!acpi_gbl_reduced_hardware) { + for_each_node(node) + writel(0x40000000 | (node << 12), + (volatile void __iomem *)(0x80000efdfb000274UL + (node<<44))); + }

clear_csr_ecfg(ECFG0_IM); clear_csr_estat(ESTATF_IP);