diff options
| author | Jason S. McMullan <jason.mcmullan@netronome.com> | 2015-09-30 15:35:05 +0900 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-12-10 19:38:07 -0600 |
| commit | c20aecf6963d1273d8f6d61c042b4845441ca592 (patch) | |
| tree | a8dd6cf72ee59cf4f1172ffe5e37f3cd73cbca72 /mm/page_alloc.c | |
| parent | 21461775f3d173dedec27a0402d426ba422d80a1 (diff) | |
PCI: Support PCIe devices with short cfg_size
If a device quirk modifies the pci_dev->cfg_size to be less than
PCI_CFG_SPACE_EXP_SIZE (4096), but greater than PCI_CFG_SPACE_SIZE (256),
the PCI sysfs interface truncates the readable size to PCI_CFG_SPACE_SIZE.
Allow sysfs access to config space up to cfg_size, even if the device
doesn't support the entire 4096-byte PCIe config space.
Note that pci_read_config() and pci_write_config() limit access to
dev->cfg_size even though pcie_config_attr contains 4096 (the maximum
size).
Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com>
[simon: edited changelog]
Signed-off-by: Simon Horman <simon.horman@netronome.com>
[bhelgaas: more changelog edits]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions