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irqchip/gic-v3: Fix GIC_LINE_NR accessor

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As per GIC spec, ITLinesNumber indicates the maximum SPI INTID that
the GIC implementation supports. And the maximum SPI INTID an
implementation might support is 1019 (field value 11111).

max(GICD_TYPER_SPIS(...), 1020) is not what we actually want for
GIC_LINE_NR. Fix it to min(GICD_TYPER_SPIS(...), 1020).

Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1568789850-14080-1-git-send-email-yuzenghui@huawei.com
This commit is contained in:
Zenghui Yu 2019-09-18 06:57:30 +00:00 committed by Marc Zyngier
parent 212fbf2c9e
commit c107d613f9
1 changed files with 1 additions and 1 deletions
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drivers/irqchip/irq-gic-v3.c
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@ -59,7 +59,7 @@ static struct gic_chip_data gic_data __read_mostly;
static DEFINE_STATIC_KEY_TRUE(supports_deactivate_key);
#define GIC_ID_NR (1U << GICD_TYPER_ID_BITS(gic_data.rdists.gicd_typer))
#define GIC_LINE_NR max(GICD_TYPER_SPIS(gic_data.rdists.gicd_typer), 1020U)
#define GIC_LINE_NR min(GICD_TYPER_SPIS(gic_data.rdists.gicd_typer), 1020U)
#define GIC_ESPI_NR GICD_TYPER_ESPIS(gic_data.rdists.gicd_typer)
/*