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PCI: cpqphp: Cleanup and remove unreachable paths 

Remove redundant checks and unreachable paths.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Sasha Levin 2012-12-20 14:11:23 -05:00 committed by Bjorn Helgaas
parent b4b4fbba46
commit 3ecd9d01f7
1 changed files with 20 additions and 37 deletions
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57
drivers/pci/hotplug/cpqphp_ctrl.c
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@ -1900,8 +1900,7 @@ static void interrupt_event_handler(struct controller *ctrl)
dbg("power fault\n");
} else {
/* refresh notification */
if (p_slot)
update_slot_info(ctrl, p_slot);
update_slot_info(ctrl, p_slot);
}
ctrl->event_queue[loop].event_type = 0;
@ -2520,44 +2519,28 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
/* If we have IO resources copy them and fill in the bridge's
* IO range registers */
if (io_node) {
memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
io_node->next = NULL;
memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
io_node->next = NULL;
/* set IO base and Limit registers */
temp_byte = io_node->base >> 8;
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte);
/* set IO base and Limit registers */
temp_byte = io_node->base >> 8;
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte);
temp_byte = (io_node->base + io_node->length - 1) >> 8;
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
} else {
kfree(hold_IO_node);
hold_IO_node = NULL;
}
temp_byte = (io_node->base + io_node->length - 1) >> 8;
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
/* If we have memory resources copy them and fill in the
* bridge's memory range registers. Otherwise, fill in the
* range registers with values that disable them. */
if (mem_node) {
memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
mem_node->next = NULL;
/* Copy the memory resources and fill in the bridge's memory
* range registers.
*/
memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
mem_node->next = NULL;
/* set Mem base and Limit registers */
temp_word = mem_node->base >> 16;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
/* set Mem base and Limit registers */
temp_word = mem_node->base >> 16;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
temp_word = (mem_node->base + mem_node->length - 1) >> 16;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
} else {
temp_word = 0xFFFF;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
temp_word = 0x0000;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
kfree(hold_mem_node);
hold_mem_node = NULL;
}
temp_word = (mem_node->base + mem_node->length - 1) >> 16;
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
p_mem_node->next = NULL;
@ -2627,7 +2610,7 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
/* Return unused bus resources
* First use the temporary node to store information for
* the board */
if (hold_bus_node && bus_node && temp_resources.bus_head) {
if (bus_node && temp_resources.bus_head) {
hold_bus_node->length = bus_node->base - hold_bus_node->base;
hold_bus_node->next = func->bus_head;
@ -2751,7 +2734,7 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
}
/* If we have prefetchable memory space available and there
* is some left at the end, return the unused portion */
if (hold_p_mem_node && temp_resources.p_mem_head) {
if (temp_resources.p_mem_head) {
p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head),
&hold_p_mem_node, 0x100000);