The part_event_bitmap register is 64 bits wide and should be read with
ioread64 instead of the 32-bit ioread32.
Reported-by: Doug Meyer <dmeyer@xxxxxxxxxx>
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Kelvin Cao <Kelvin.Cao@xxxxxxxxxxxxx>
---
drivers/pci/switch/switchtec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 8c94cd3fd1f2..465d6afd826e 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -675,7 +675,7 @@ static int ioctl_event_summary(struct switchtec_dev *stdev,
return -ENOMEM;
s->global = ioread32(&stdev->mmio_sw_event->global_summary);
- s->part_bitmap = ioread32(&stdev->mmio_sw_event->part_event_bitmap);
+ s->part_bitmap = ioread64(&stdev->mmio_sw_event->part_event_bitmap);
s->local_part = ioread32(&stdev->mmio_part_cfg->part_event_summary);
for (i = 0; i < stdev->partition_count; i++) {
--
2.20.1
