The following commit has been merged into the irq/irqchip-next branch of irqchip:
Commit-ID: a3d66a76348daf559873f19afc912a2a7c2ccdaf Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/a3d66a7634... Author: Pali Rohár pali@kernel.org AuthorDate: Mon, 25 Apr 2022 13:37:05 +02:00 Committer: Marc Zyngier maz@kernel.org CommitterDate: Fri, 06 May 2022 12:18:37 +01:00
irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x
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 pali@kernel.org Cc: stable@vger.kernel.org Fixes: 28da06dfd9e4 ("irqchip: armada-370-xp: Enable the PMU interrupts") Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/20220425113706.29310-1-pali@kernel.org --- drivers/irqchip/irq-armada-370-xp.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index c877285..ee18eb3 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -327,7 +327,16 @@ 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),