diff options
| author |   Pali Rohár <pali@kernel.org> | 2022-04-25 13:37:05 +0200 |
|---|---|---|
| committer |   Marc Zyngier <maz@kernel.org> | 2022-05-06 12:18:37 +0100 |
| commit | a3d66a76348daf559873f19afc912a2a7c2ccdaf (patch) | |
| tree | 114a33cc9d5b10241fc9993821754b32cbeed2d9 /drivers/irqchip | |
| parent | irqchip/gic: Improved warning about incorrect type (diff) | |
| download | wireguard-linux-a3d66a76348daf559873f19afc912a2a7c2ccdaf.tar.xz wireguard-linux-a3d66a76348daf559873f19afc912a2a7c2ccdaf.zip | |
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
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-armada-370-xp.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index c877285d7095..ee18eb3e72b7 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), |