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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-23 17:33:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-23 17:33:10 -0700 |
| commit | 9bd4459a3d31cfe79dfb5ea00912471537f219c3 (patch) | |
| tree | 3fe61f4934a3f435630365db50c8e50183b480d3 | |
| parent | 086e8ddb567951513a5dace21a09297768aee14f (diff) | |
| parent | 3ad2a5f57656a14d964b673a5a0e4ab0e583c870 (diff) | |
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irqchip fix from Thomas Gleixner:
"A fix for a GIC-V3 irqchip regression which prevents some systems from
booting"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gicv3-its: ITS table size should not be smaller than PSZ
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 9687f8afebff..1b7e155869f6 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -828,7 +828,14 @@ static int its_alloc_tables(struct its_node *its) u64 typer = readq_relaxed(its->base + GITS_TYPER); u32 ids = GITS_TYPER_DEVBITS(typer); - order = get_order((1UL << ids) * entry_size); + /* + * 'order' was initialized earlier to the default page + * granule of the the ITS. We can't have an allocation + * smaller than that. If the requested allocation + * is smaller, round up to the default page granule. + */ + order = max(get_order((1UL << ids) * entry_size), + order); if (order >= MAX_ORDER) { order = MAX_ORDER - 1; pr_warn("%s: Device Table too large, reduce its page order to %u\n", |