From: Pali Rohár Date: Mon, 25 Apr 2022 11:37:05 +0000 (+0200) Subject: irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=297c9c640d6e28c71a2d15c719b6dfb4b9448e68;p=linux.git irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x commit a3d66a76348daf559873f19afc912a2a7c2ccdaf upstream. Register ARMADA_370_XP_INT_FABRIC_MASK_OFFS is Armada 370 and XP specific and on new Armada platforms it has different meaning. It does not configure Performance Counter Overflow interrupt masking. So do not touch this register on non-A370/XP platforms (A375, A38x and A39x). Signed-off-by: Pali Rohár Cc: stable@vger.kernel.org Fixes: 28da06dfd9e4 ("irqchip: armada-370-xp: Enable the PMU interrupts") Reviewed-by: Andrew Lunn Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220425113706.29310-1-pali@kernel.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index c91ddb0cf1448..01709c61e3641 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -308,7 +308,16 @@ static inline int armada_370_xp_msi_init(struct device_node *node, static void armada_xp_mpic_perf_init(void) { - unsigned long cpuid = cpu_logical_map(smp_processor_id()); + unsigned long cpuid; + + /* + * This Performance Counter Overflow interrupt is specific for + * Armada 370 and XP. It is not available on Armada 375, 38x and 39x. + */ + if (!of_machine_is_compatible("marvell,armada-370-xp")) + return; + + cpuid = cpu_logical_map(smp_processor_id()); /* Enable Performance Counter Overflow interrupts */ writel(ARMADA_370_XP_INT_CAUSE_PERF(cpuid),