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irqchip/gic-v3-its: Make its_lock a raw_spin_lock_t

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The its_lock lock is held while a new device is added to the list and
during setup while the CPU is booted. Even on -RT the CPU-bootup is
performed with disabled interrupts.

Make its_lock a raw_spin_lock_t.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Sebastian Andrzej Siewior 2018-07-18 17:42:04 +02:00 committed by Marc Zyngier
parent 30800b3a1f
commit a8db74564b
1 changed files with 9 additions and 9 deletions
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18
drivers/irqchip/irq-gic-v3-its.c
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@ -162,7 +162,7 @@ static struct {
} vpe_proxy; } vpe_proxy;
static LIST_HEAD(its_nodes); static LIST_HEAD(its_nodes);
static DEFINE_SPINLOCK(its_lock); static DEFINE_RAW_SPINLOCK(its_lock);
static struct rdists *gic_rdists; static struct rdists *gic_rdists;
static struct irq_domain *its_parent; static struct irq_domain *its_parent;
@ -2063,12 +2063,12 @@ static void its_cpu_init_collections(void)
{ {
struct its_node *its; struct its_node *its;
spin_lock(&its_lock); raw_spin_lock(&its_lock);
list_for_each_entry(its, &its_nodes, entry) list_for_each_entry(its, &its_nodes, entry)
its_cpu_init_collection(its); its_cpu_init_collection(its);
spin_unlock(&its_lock); raw_spin_unlock(&its_lock);
} }
static struct its_device *its_find_device(struct its_node *its, u32 dev_id) static struct its_device *its_find_device(struct its_node *its, u32 dev_id)
@ -3139,7 +3139,7 @@ static int its_save_disable(void)
struct its_node *its; struct its_node *its;
int err = 0; int err = 0;
spin_lock(&its_lock); raw_spin_lock(&its_lock);
list_for_each_entry(its, &its_nodes, entry) { list_for_each_entry(its, &its_nodes, entry) {
void __iomem *base; void __iomem *base;
@ -3171,7 +3171,7 @@ err:
writel_relaxed(its->ctlr_save, base + GITS_CTLR); writel_relaxed(its->ctlr_save, base + GITS_CTLR);
} }
} }
spin_unlock(&its_lock); raw_spin_unlock(&its_lock);
return err; return err;
} }
@ -3181,7 +3181,7 @@ static void its_restore_enable(void)
struct its_node *its; struct its_node *its;
int ret; int ret;
spin_lock(&its_lock); raw_spin_lock(&its_lock);
list_for_each_entry(its, &its_nodes, entry) { list_for_each_entry(its, &its_nodes, entry) {
void __iomem *base; void __iomem *base;
int i; int i;
@ -3233,7 +3233,7 @@ static void its_restore_enable(void)
GITS_TYPER_HCC(gic_read_typer(base + GITS_TYPER))) GITS_TYPER_HCC(gic_read_typer(base + GITS_TYPER)))
its_cpu_init_collection(its); its_cpu_init_collection(its);
} }
spin_unlock(&its_lock); raw_spin_unlock(&its_lock);
} }
static struct syscore_ops its_syscore_ops = { static struct syscore_ops its_syscore_ops = {
@ -3467,9 +3467,9 @@ static int __init its_probe_one(struct resource *res,
if (err) if (err)
goto out_free_tables; goto out_free_tables;
spin_lock(&its_lock); raw_spin_lock(&its_lock);
list_add(&its->entry, &its_nodes); list_add(&its->entry, &its_nodes);
spin_unlock(&its_lock); raw_spin_unlock(&its_lock);
return 0; return 0;