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PCI/switchtec: Read all 64 bits of part_event_bitmap 

commit 6acdf7e19b upstream.

The part_event_bitmap register is 64 bits wide, so read it with ioread64()
instead of the 32-bit ioread32().

Fixes: 52eabba5bc ("switchtec: Add IOCTLs to the Switchtec driver")
Link: https://lore.kernel.org/r/20190910195833.3891-1-logang@deltatee.com
Reported-by: Doug Meyer <dmeyer@gigaio.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org	# v4.12+
Cc: Kelvin Cao <Kelvin.Cao@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Logan Gunthorpe 2019-09-10 13:58:33 -06:00 committed by Greg Kroah-Hartman
parent 1a35dfb2a1
commit d83f65da65
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/switch/switchtec.c
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@ -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++) {