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Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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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
This commit is contained in:
Linus Torvalds 2015-05-23 17:33:10 -07:00
parent 086e8ddb56 3ad2a5f576
commit 9bd4459a3d
1 changed files with 8 additions and 1 deletions
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9
drivers/irqchip/irq-gic-v3-its.c
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@ -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",