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PCI: cpqphp: Convert timers to use timer_setup() 

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.  This has the result of fixing
pushbutton_helper_thread(), which was truncating the event pointer to 32
bits.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Cc: Quentin Lambert <lambert.quentin@gmail.com>
Cc: Aleksandr Bezzubikov <zuban32s@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
This commit is contained in:
Kees Cook 2017-10-16 16:18:02 -07:00 committed by Bjorn Helgaas
parent c4459a0867
commit 34d773f6ca
3 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/hotplug/cpqphp.h
View File

@ -410,7 +410,7 @@ void cpqhp_create_debugfs_files(struct controller *ctrl);
void cpqhp_remove_debugfs_files(struct controller *ctrl);
/* controller functions */
void cpqhp_pushbutton_thread(unsigned long event_pointer);
void cpqhp_pushbutton_thread(struct timer_list *t);
irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
int cpqhp_find_available_resources(struct controller *ctrl,
void __iomem *rom_start);

3
drivers/pci/hotplug/cpqphp_core.c
View File

@ -661,9 +661,8 @@ static int ctrl_slot_setup(struct controller *ctrl,
slot->p_sm_slot = slot_entry;
init_timer(&slot->task_event);
timer_setup(&slot->task_event, cpqhp_pushbutton_thread, 0);
slot->task_event.expires = jiffies + 5 * HZ;
slot->task_event.function = cpqhp_pushbutton_thread;
/*FIXME: these capabilities aren't used but if they are
* they need to be correctly implemented

19
drivers/pci/hotplug/cpqphp_ctrl.c
View File

@ -47,7 +47,7 @@ static void interrupt_event_handler(struct controller *ctrl);
static struct task_struct *cpqhp_event_thread;
static unsigned long pushbutton_pending; /* = 0 */
static struct timer_list *pushbutton_pending; /* = NULL */
/* delay is in jiffies to wait for */
static void long_delay(int delay)
@ -1732,9 +1732,10 @@ static u32 remove_board(struct pci_func *func, u32 replace_flag, struct controll
return 0;
}
static void pushbutton_helper_thread(unsigned long data)
static void pushbutton_helper_thread(struct timer_list *t)
{
pushbutton_pending = data;
pushbutton_pending = t;
wake_up_process(cpqhp_event_thread);
}
@ -1883,13 +1884,13 @@ static void interrupt_event_handler(struct controller *ctrl)
wait_for_ctrl_irq(ctrl);
mutex_unlock(&ctrl->crit_sect);
init_timer(&p_slot->task_event);
timer_setup(&p_slot->task_event,
pushbutton_helper_thread,
0);
p_slot->hp_slot = hp_slot;
p_slot->ctrl = ctrl;
/* p_slot->physical_slot = physical_slot; */
p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
p_slot->task_event.function = pushbutton_helper_thread;
p_slot->task_event.data = (u32) p_slot;
dbg("add_timer p_slot = %p\n", p_slot);
add_timer(&p_slot->task_event);
@ -1920,15 +1921,15 @@ static void interrupt_event_handler(struct controller *ctrl)
* Scheduled procedure to handle blocking stuff for the pushbuttons.
* Handles all pending events and exits.
*/
void cpqhp_pushbutton_thread(unsigned long slot)
void cpqhp_pushbutton_thread(struct timer_list *t)
{
u8 hp_slot;
u8 device;
struct pci_func *func;
struct slot *p_slot = (struct slot *) slot;
struct slot *p_slot = from_timer(p_slot, t, task_event);
struct controller *ctrl = (struct controller *) p_slot->ctrl;
pushbutton_pending = 0;
pushbutton_pending = NULL;
hp_slot = p_slot->hp_slot;
device = p_slot->device;