| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 63/91] PCI/switchtec: Read all 64 bits of part_event_bitmap | Date | Thu, 2 Jan 2020 23:07:45 +0100 |
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From: Logan Gunthorpe <logang@deltatee.com>
commit 6acdf7e19b37cb3a9258603d0eab315079c19c5e upstream.
The part_event_bitmap register is 64 bits wide, so read it with ioread64() instead of the 32-bit ioread32().
Fixes: 52eabba5bcdb ("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>
--- drivers/pci/switch/switchtec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -898,7 +898,7 @@ static int ioctl_event_summary(struct sw u32 reg; s.global = ioread32(&stdev->mmio_sw_event->global_summary); - s.part_bitmap = ioread32(&stdev->mmio_sw_event->part_event_bitmap); + s.part_bitmap = readq(&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++) {
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