AcoSail/kernel_optimize_test
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irqchip/gic: Make quirks matching conditional on init return value

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As it turns out, the IIDR is not sufficient to distinguish between GICv3
implementations when it comes to enabling quirks. So update the prototype
of the init() hook to return a bool, and interpret a 'false' return value
as no match, in which case the 'enabling workaround' log message should
not be printed.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Ard Biesheuvel 2017-10-17 17:55:55 +01:00 committed by Marc Zyngier
parent fa15001919
commit 9d111d4910
3 changed files with 13 additions and 6 deletions
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5
drivers/irqchip/irq-gic-common.c
View File

@ -40,8 +40,9 @@ void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
for (; quirks->desc; quirks++) {
if (quirks->iidr != (quirks->mask & iidr))
continue;
quirks->init(data);
pr_info("GIC: enabling workaround for %s\n", quirks->desc);
if (quirks->init(data))
pr_info("GIC: enabling workaround for %s\n",
quirks->desc);
}
}

2
drivers/irqchip/irq-gic-common.h
View File

@ -23,7 +23,7 @@
struct gic_quirk {
const char *desc;
void (*init)(void *data);
bool (*init)(void *data);
u32 iidr;
u32 mask;
};

12
drivers/irqchip/irq-gic-v3-its.c
View File

@ -2730,28 +2730,34 @@ static int its_force_quiescent(void __iomem *base)
}
}
static void __maybe_unused its_enable_quirk_cavium_22375(void *data)
static bool __maybe_unused its_enable_quirk_cavium_22375(void *data)
{
struct its_node *its = data;
/* erratum 22375: only alloc 8MB table size */
its->device_ids = 0x14; /* 20 bits, 8MB */
its->flags |= ITS_FLAGS_WORKAROUND_CAVIUM_22375;
return true;
}
static void __maybe_unused its_enable_quirk_cavium_23144(void *data)
static bool __maybe_unused its_enable_quirk_cavium_23144(void *data)
{
struct its_node *its = data;
its->flags |= ITS_FLAGS_WORKAROUND_CAVIUM_23144;
return true;
}
static void __maybe_unused its_enable_quirk_qdf2400_e0065(void *data)
static bool __maybe_unused its_enable_quirk_qdf2400_e0065(void *data)
{
struct its_node *its = data;
/* On QDF2400, the size of the ITE is 16Bytes */
its->ite_size = 16;
return true;
}
static const struct gic_quirk its_quirks[] = {