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author | Jason S. McMullan <jason.mcmullan@netronome.com> | 2015-09-30 15:35:05 +0900 |
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committer | Sasha Levin <alexander.levin@verizon.com> | 2016-09-02 23:39:11 -0400 |
commit | 884740187257c03adae546c2bd9ca2b851785924 (patch) | |
tree | 1e8ad7bf41321e1005cd8ad4137cd3c61dfc7924 /include | |
parent | f7bb9ba34f4697790b144368377a268f3f2634e0 (diff) |
PCI: Support PCIe devices with short cfg_size
[ Upstream commit c20aecf6963d1273d8f6d61c042b4845441ca592 ]
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: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions