Skip to content

Commit

Permalink
eeepc-laptop: flatten control flow
Browse files Browse the repository at this point in the history
In eeepc_rfkill_hotplug there's an if statement with a big tail that
ends right before the out_unlock label. We might as well invert the
condition and jump to out_unlock in that case, pretty much like the rest
of the code does. This removes an indentation level for a large chunk of
code and also stops suggesting there might be an else clause.

Signed-off-by: Frans Klaver <[email protected]>
Signed-off-by: Darren Hart <[email protected]>
  • Loading branch information
fransklaver authored and dvhart committed Nov 19, 2014
1 parent 9828037 commit 248d490
Showing 1 changed file with 45 additions and 44 deletions.
89 changes: 45 additions & 44 deletions drivers/platform/x86/eeepc-laptop.c
Original file line number Diff line number Diff line change
Expand Up @@ -580,59 +580,60 @@ static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
mutex_lock(&eeepc->hotplug_lock);
pci_lock_rescan_remove();

if (eeepc->hotplug_slot) {
port = acpi_get_pci_dev(handle);
if (!port) {
pr_warning("Unable to find port\n");
goto out_unlock;
}
if (!eeepc->hotplug_slot)
goto out_unlock;

bus = port->subordinate;
port = acpi_get_pci_dev(handle);
if (!port) {
pr_warning("Unable to find port\n");
goto out_unlock;
}

if (!bus) {
pr_warn("Unable to find PCI bus 1?\n");
goto out_put_dev;
}
bus = port->subordinate;

if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
pr_err("Unable to read PCI config space?\n");
goto out_put_dev;
}
if (!bus) {
pr_warn("Unable to find PCI bus 1?\n");
goto out_put_dev;
}

if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
pr_err("Unable to read PCI config space?\n");
goto out_put_dev;
}

absent = (l == 0xffffffff);
absent = (l == 0xffffffff);

if (blocked != absent) {
pr_warn("BIOS says wireless lan is %s, "
"but the pci device is %s\n",
blocked ? "blocked" : "unblocked",
absent ? "absent" : "present");
pr_warn("skipped wireless hotplug as probably "
"inappropriate for this model\n");
if (blocked != absent) {
pr_warn("BIOS says wireless lan is %s, "
"but the pci device is %s\n",
blocked ? "blocked" : "unblocked",
absent ? "absent" : "present");
pr_warn("skipped wireless hotplug as probably "
"inappropriate for this model\n");
goto out_put_dev;
}

if (!blocked) {
dev = pci_get_slot(bus, 0);
if (dev) {
/* Device already present */
pci_dev_put(dev);
goto out_put_dev;
}

if (!blocked) {
dev = pci_get_slot(bus, 0);
if (dev) {
/* Device already present */
pci_dev_put(dev);
goto out_put_dev;
}
dev = pci_scan_single_device(bus, 0);
if (dev) {
pci_bus_assign_resources(bus);
pci_bus_add_device(dev);
}
} else {
dev = pci_get_slot(bus, 0);
if (dev) {
pci_stop_and_remove_bus_device(dev);
pci_dev_put(dev);
}
dev = pci_scan_single_device(bus, 0);
if (dev) {
pci_bus_assign_resources(bus);
pci_bus_add_device(dev);
}
} else {
dev = pci_get_slot(bus, 0);
if (dev) {
pci_stop_and_remove_bus_device(dev);
pci_dev_put(dev);
}
out_put_dev:
pci_dev_put(port);
}
out_put_dev:
pci_dev_put(port);

out_unlock:
pci_unlock_rescan_remove();
Expand Down

0 comments on commit 248d490

Please sign in to comment.