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authorKees Cook <keescook@chromium.org>2017-10-04 17:53:48 -0700
committerBjorn Helgaas <bhelgaas@google.com>2017-11-06 18:48:57 -0600
commitc4459a086748848b8a498282780f708c235a06a5 (patch)
tree46dec98d52bd741595258bb4e7918c22d5d5f457 /drivers/pci/hotplug
parent05196e258a617ee14dd3255c480cbc3f0caff5ce (diff)
PCI: pciehp: 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 fixes what appears to be a bug in passing the wrong pointer to the timer handler (address of ctrl pointer instead of ctrl pointer). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Mayurkumar Patel <mayurkumar.patel@intel.com> Cc: Keith Busch <keith.busch@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/pci/hotplug')
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index e5d5ce9e3010..ba5055c5115c 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -50,14 +50,13 @@ static irqreturn_t pcie_isr(int irq, void *dev_id);
static void start_int_poll_timer(struct controller *ctrl, int sec);
/* This is the interrupt polling timeout function. */
-static void int_poll_timeout(unsigned long data)
+static void int_poll_timeout(struct timer_list *t)
{
- struct controller *ctrl = (struct controller *)data;
+ struct controller *ctrl = from_timer(ctrl, t, poll_timer);
/* Poll for interrupt events. regs == NULL => polling */
pcie_isr(0, ctrl);
- init_timer(&ctrl->poll_timer);
if (!pciehp_poll_time)
pciehp_poll_time = 2; /* default polling interval is 2 sec */
@@ -71,8 +70,6 @@ static void start_int_poll_timer(struct controller *ctrl, int sec)
if ((sec <= 0) || (sec > 60))
sec = 2;
- ctrl->poll_timer.function = &int_poll_timeout;
- ctrl->poll_timer.data = (unsigned long)ctrl;
ctrl->poll_timer.expires = jiffies + sec * HZ;
add_timer(&ctrl->poll_timer);
}
@@ -83,7 +80,7 @@ static inline int pciehp_request_irq(struct controller *ctrl)
/* Install interrupt polling timer. Start with 10 sec delay */
if (pciehp_poll_mode) {
- init_timer(&ctrl->poll_timer);
+ timer_setup(&ctrl->poll_timer, int_poll_timeout, 0);
start_int_poll_timer(ctrl, 10);
return 0;
}
@@ -764,8 +761,7 @@ int pciehp_reset_slot(struct slot *slot, int probe)
ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, ctrl_mask);
if (pciehp_poll_mode)
- int_poll_timeout(ctrl->poll_timer.data);
-
+ int_poll_timeout(&ctrl->poll_timer);
return 0;
}