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PCI: cpqphp: Remove unused assignments

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Remove variables and assignments that are never used.

Found by Krzysztof using cppcheck, e.g.:

  $ cppcheck --enable=all --force
  unreadVariable drivers/pci/hotplug/cpqphp_core.c:1257 Variable 'rc' is assigned a value that is never used.

Reported-by: Krzysztof Wilczyński <kw@linux.com>
Link: https://lore.kernel.org/r/20220313192933.434746-5-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2022-03-13 14:29:32 -05:00
parent 6f10255072
commit af8b8b6c04
3 changed files with 7 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/hotplug/cpqphp_core.c
View File

@ -1254,7 +1254,7 @@ static void __exit unload_cpqphpd(void)
struct pci_resource *res;
struct pci_resource *tres;
rc = compaq_nvram_store(cpqhp_rom_start);
compaq_nvram_store(cpqhp_rom_start);
ctrl = cpqhp_ctrl_list;

22
drivers/pci/hotplug/cpqphp_ctrl.c
View File

@ -881,7 +881,6 @@ irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data)
u8 reset;
u16 misc;
u32 Diff;
u32 temp_dword;
misc = readw(ctrl->hpc_reg + MISC);
@ -917,7 +916,7 @@ irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data)
writel(Diff, ctrl->hpc_reg + INT_INPUT_CLEAR);
/* Read it back to clear any posted writes */
temp_dword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
if (!Diff)
/* Clear all interrupts */
@ -1412,7 +1411,6 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
u32 rc = 0;
struct pci_func *new_slot = NULL;
struct pci_bus *bus = ctrl->pci_bus;
struct slot *p_slot;
struct resource_lists res_lists;
hp_slot = func->device - ctrl->slot_device_offset;
@ -1459,7 +1457,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
if (rc)
return rc;
p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
/* turn on board and blink green LED */
@ -1614,7 +1612,6 @@ static u32 remove_board(struct pci_func *func, u32 replace_flag, struct controll
u8 device;
u8 hp_slot;
u8 temp_byte;
u32 rc;
struct resource_lists res_lists;
struct pci_func *temp_func;
@ -1629,7 +1626,7 @@ static u32 remove_board(struct pci_func *func, u32 replace_flag, struct controll
/* When we get here, it is safe to change base address registers.
* We will attempt to save the base address register lengths */
if (replace_flag || !ctrl->add_support)
rc = cpqhp_save_base_addr_length(ctrl, func);
cpqhp_save_base_addr_length(ctrl, func);
else if (!func->bus_head && !func->mem_head &&
!func->p_mem_head && !func->io_head) {
/* Here we check to see if we've saved any of the board's
@ -1647,7 +1644,7 @@ static u32 remove_board(struct pci_func *func, u32 replace_flag, struct controll
}
if (!skip)
rc = cpqhp_save_used_resources(ctrl, func);
cpqhp_save_used_resources(ctrl, func);
}
/* Change status to shutdown */
if (func->is_a_board)
@ -1767,7 +1764,7 @@ void cpqhp_event_stop_thread(void)
static void interrupt_event_handler(struct controller *ctrl)
{
int loop = 0;
int loop;
int change = 1;
struct pci_func *func;
u8 hp_slot;
@ -1885,7 +1882,6 @@ static void interrupt_event_handler(struct controller *ctrl)
void cpqhp_pushbutton_thread(struct timer_list *t)
{
u8 hp_slot;
u8 device;
struct pci_func *func;
struct slot *p_slot = from_timer(p_slot, t, task_event);
struct controller *ctrl = (struct controller *) p_slot->ctrl;
@ -1893,8 +1889,6 @@ void cpqhp_pushbutton_thread(struct timer_list *t)
pushbutton_pending = NULL;
hp_slot = p_slot->hp_slot;
device = p_slot->device;
if (is_slot_enabled(ctrl, hp_slot)) {
p_slot->state = POWEROFF_STATE;
/* power Down board */
@ -1951,15 +1945,12 @@ int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func)
u32 tempdword;
int rc;
struct slot *p_slot;
int physical_slot = 0;
tempdword = 0;
device = func->device;
hp_slot = device - ctrl->slot_device_offset;
p_slot = cpqhp_find_slot(ctrl, device);
if (p_slot)
physical_slot = p_slot->number;
/* Check to see if the interlock is closed */
tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
@ -2043,13 +2034,10 @@ int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func)
unsigned int devfn;
struct slot *p_slot;
struct pci_bus *pci_bus = ctrl->pci_bus;
int physical_slot = 0;
device = func->device;
func = cpqhp_slot_find(ctrl->bus, device, index++);
p_slot = cpqhp_find_slot(ctrl, device);
if (p_slot)
physical_slot = p_slot->number;
/* Make sure there are no video controllers here */
while (func && !rc) {

2
drivers/pci/hotplug/cpqphp_pci.c
View File

@ -473,7 +473,7 @@ int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot)
int sub_bus;
int max_functions;
int function = 0;
int cloop = 0;
int cloop;
int stop_it;
ID = 0xFFFFFFFF;