From cac1a122bd9f6e09de486f2d38037f4cb6a6fe9e Mon Sep 17 00:00:00 2001 From: Logan Gunthorpe Date: Thu, 16 Jan 2020 12:33:16 +0800 Subject: [PATCH] PCI/switchtec: Read all 64 bits of part_event_bitmap 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 Signed-off-by: Logan Gunthorpe Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org # v4.12+ Cc: Kelvin Cao Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- drivers/pci/switch/switchtec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index 72db2e0ebced..5aaa4ce04ec3 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -13,7 +13,7 @@ #include #include #include - +#include #include MODULE_DESCRIPTION("Microsemi Switchtec(tm) PCIe Management Driver"); @@ -633,7 +633,7 @@ static int ioctl_event_summary(struct switchtec_dev *stdev, 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++) { -- GitLab