forked from Minki/linux
75 lines
3.2 KiB
Plaintext
75 lines
3.2 KiB
Plaintext
|
Contributions are solicited in particular to remedy the following issues:
|
||
|
|
|
||
|
|
cpcihp:
|
||
|
|
|
||
|
|
* There are no implementations of the ->hardware_test, ->get_power and
|
||
|
|
->set_power callbacks in struct cpci_hp_controller_ops. Why were they
|
||
|
|
introduced? Can they be removed from the struct?
|
||
|
|
|
||
|
|
cpqphp:
|
||
|
|
|
||
|
|
* The driver spawns a kthread cpqhp_event_thread() which is woken by the
|
||
|
|
hardirq handler cpqhp_ctrl_intr(). Convert this to threaded IRQ handling.
|
||
|
|
The kthread is also woken from the timer pushbutton_helper_thread(),
|
||
|
|
convert it to call irq_wake_thread(). Use pciehp as a template.
|
||
|
|
|
||
|
|
* A large portion of cpqphp_ctrl.c and cpqphp_pci.c concerns resource
|
||
|
|
management. Doesn't this duplicate functionality in the core?
|
||
|
|
|
||
|
|
ibmphp:
|
||
|
|
|
||
|
|
* Implementations of hotplug_slot_ops callbacks such as get_adapter_present()
|
||
|
|
in ibmphp_core.c create a copy of the struct slot on the stack, then perform
|
||
|
|
the actual operation on that copy. Determine if this overhead is necessary,
|
||
|
|
delete it if not. The functions also perform a NULL pointer check on the
|
||
|
|
struct hotplug_slot, this seems superfluous.
|
||
|
|
|
||
|
|
* Several functions access the pci_slot member in struct hotplug_slot even
|
||
|
|
though pci_hotplug.h declares it private. See get_max_bus_speed() for an
|
||
|
|
example. Either the pci_slot member should no longer be declared private
|
||
|
|
or ibmphp should store a pointer to its bus in struct slot. Probably the
|
||
|
|
former.
|
||
|
|
|
||
|
|
* The functions get_max_adapter_speed() and get_bus_name() are commented out.
|
||
|
|
Can they be deleted? There are also forward declarations at the top of
|
||
|
|
ibmphp_core.c as well as pointers in ibmphp_hotplug_slot_ops, likewise
|
||
|
|
commented out.
|
||
|
|
|
||
|
|
* ibmphp_init_devno() takes a struct slot **, it could instead take a
|
||
|
|
struct slot *.
|
||
|
|
|
||
|
|
* The return value of pci_hp_register() is not checked.
|
||
|
|
|
||
|
|
* iounmap(io_mem) is called in the error path of ebda_rsrc_controller()
|
||
|
|
and once more in the error path of its caller ibmphp_access_ebda().
|
||
|
|
|
||
|
|
* The various slot data structures are difficult to follow and need to be
|
||
|
|
simplified. A lot of functions are too large and too complex, they need
|
||
|
|
to be broken up into smaller, manageable pieces. Negative examples are
|
||
|
|
ebda_rsrc_controller() and configure_bridge().
|
||
|
|
|
||
|
|
* A large portion of ibmphp_res.c and ibmphp_pci.c concerns resource
|
||
|
|
management. Doesn't this duplicate functionality in the core?
|
||
|
|
|
||
|
|
sgi_hotplug:
|
||
|
|
|
||
|
|
* Several functions access the pci_slot member in struct hotplug_slot even
|
||
|
|
though pci_hotplug.h declares it private. See sn_hp_destroy() for an
|
||
|
|
example. Either the pci_slot member should no longer be declared private
|
||
|
|
or sgi_hotplug should store a pointer to it in struct slot. Probably the
|
||
|
|
former.
|
||
|
|
|
||
|
|
shpchp:
|
||
|
|
|
||
|
|
* There is only a single implementation of struct hpc_ops. Can the struct be
|
||
|
|
removed and its functions invoked directly? This has already been done in
|
||
|
|
pciehp with commit 82a9e79ef132 ("PCI: pciehp: remove hpc_ops"). Clarify
|
||
|
|
if there was a specific reason not to apply the same change to shpchp.
|
||
|
|
|
||
|
|
* The ->get_mode1_ECC_cap callback in shpchp_hpc_ops is never invoked.
|
||
|
|
Why was it introduced? Can it be removed?
|
||
|
|
|
||
|
|
* The hardirq handler shpc_isr() queues events on a workqueue. It can be
|
||
|
|
simplified by converting it to threaded IRQ handling. Use pciehp as a
|
||
|
|
template.
|