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| author | Jason S. McMullan <jason.mcmullan@netronome.com> | 2015-09-30 15:35:05 +0900 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-11-07 13:46:55 +0100 |
| commit | c5f23bcbddde992d6b33fd5828239d58ca3922d5 (patch) | |
| tree | da90d593e36097f094b14a10cd87dcd492935c40 /include/linux/pci_ids.h | |
| parent | a4f829cc3a6aac9ac988c736d83f00e9ade2e7c9 (diff) | |
PCI: Support PCIe devices with short cfg_size
commit c20aecf6963d1273d8f6d61c042b4845441ca592 upstream.
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>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'include/linux/pci_ids.h')
0 files changed, 0 insertions, 0 deletions