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authorLinus Torvalds <torvalds@linux-foundation.org>2017-08-04 15:16:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-08-04 15:16:09 -0700
commit0d5b9944070ab1408b41e55971508d962d7943a0 (patch)
tree55e23c89c8a44aaf44b8b595d9e7b111ac238a17
parentd1faa3e78a2b11adc9461ebf7593df75cc93bce3 (diff)
parentbb68cfe2f5a7f43058aed299fdbb73eb281734ed (diff)
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner: "The recent irq core changes unearthed API abuse in the HPET code, which manifested itself in a suspend/resume regression. The fix replaces the cruft with the proper function calls and cures the regression" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hpet: Cure interface abuse in the resume path
-rw-r--r--arch/x86/kernel/hpet.c27
1 files changed, 11 insertions, 16 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 16f82a3aaec7..8ce4212e2b8d 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -345,21 +345,10 @@ static int hpet_shutdown(struct clock_event_device *evt, int timer)
return 0;
}
-static int hpet_resume(struct clock_event_device *evt, int timer)
-{
- if (!timer) {
- hpet_enable_legacy_int();
- } else {
- struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt);
-
- irq_domain_deactivate_irq(irq_get_irq_data(hdev->irq));
- irq_domain_activate_irq(irq_get_irq_data(hdev->irq));
- disable_hardirq(hdev->irq);
- irq_set_affinity(hdev->irq, cpumask_of(hdev->cpu));
- enable_irq(hdev->irq);
- }
+static int hpet_resume(struct clock_event_device *evt)
+{
+ hpet_enable_legacy_int();
hpet_print_config();
-
return 0;
}
@@ -417,7 +406,7 @@ static int hpet_legacy_set_periodic(struct clock_event_device *evt)
static int hpet_legacy_resume(struct clock_event_device *evt)
{
- return hpet_resume(evt, 0);
+ return hpet_resume(evt);
}
static int hpet_legacy_next_event(unsigned long delta,
@@ -510,8 +499,14 @@ static int hpet_msi_set_periodic(struct clock_event_device *evt)
static int hpet_msi_resume(struct clock_event_device *evt)
{
struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt);
+ struct irq_data *data = irq_get_irq_data(hdev->irq);
+ struct msi_msg msg;
- return hpet_resume(evt, hdev->num);
+ /* Restore the MSI msg and unmask the interrupt */
+ irq_chip_compose_msi_msg(data, &msg);
+ hpet_msi_write(hdev, &msg);
+ hpet_msi_unmask(data);
+ return 0;
}
static int hpet_msi_next_event(unsigned long delta,