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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2017-05-24 12:30:23 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-06-19 14:49:29 +1000 |
| commit | d065caf3b3101400744d4afb915edf57755a0c95 (patch) | |
| tree | 942551ef104847c84d6689ea9c299e6847b12863 /platforms | |
| parent | 92d7ccf00bdd6c994341feb013390c28993652bf (diff) | |
| download | skiboot-d065caf3b3101400744d4afb915edf57755a0c95.zip skiboot-d065caf3b3101400744d4afb915edf57755a0c95.tar.gz skiboot-d065caf3b3101400744d4afb915edf57755a0c95.tar.bz2 | |
hw/phb4: Rework phb4_get_presence_state()
There are two issues in current implementation: It should return errcode
visibile to Linux, which has prefix OPAL_*. The code isn't very obvious.
This returns OPAL_HARDWARE when the PHB is broken. Otherwise, OPAL_SUCCESS
is always returned. In the mean while, It refactors the code to make it
obvious: OPAL_PCI_SLOT_PRESENT is returned when the presence signal (low active)
or PCIe link is active. Otherwise, OPAL_PCI_SLOT_EMPTY is returned.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'platforms')
0 files changed, 0 insertions, 0 deletions