diff options
| author | Mayurkumar Patel <mayurkumar.patel@intel.com> | 2016-08-23 11:58:51 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-09-14 22:24:45 +0300 |
| commit | 69bd3c5b28e7c988886efb3c9a7614a612eef45d (patch) | |
| tree | e66ead913a65b10d3e251214d7f5ea90cd09a0c3 /drivers/pci/hotplug | |
| parent | 0c923d1da394b96727b813d1e64412b72f1dc580 (diff) | |
| download | linux-69bd3c5b28e7c988886efb3c9a7614a612eef45d.tar.xz | |
PCI: pciehp: Don't re-read Slot Status when handling surprise event
Previously we read Slot Status when handling a surprise event. But Slot
Status might have changed since we identified the event, and the event_type
already tells us whether to enable or disable the slot, so there's no need
to read it again.
Remove handle_surprise_event() and queue the power work directly.
[bhelgaas: changelog]
Tested-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mayurkumar Patel <mayurkumar.patel@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
Diffstat (limited to 'drivers/pci/hotplug')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_ctrl.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 7ea3e61ea745..a7876842d5c1 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -302,20 +302,6 @@ static void handle_button_press_event(struct slot *p_slot) /* * Note: This function must be called with slot->lock held */ -static void handle_surprise_event(struct slot *p_slot) -{ - u8 getstatus; - - pciehp_get_adapter_status(p_slot, &getstatus); - if (!getstatus) - pciehp_queue_power_work(p_slot, DISABLE_REQ); - else - pciehp_queue_power_work(p_slot, ENABLE_REQ); -} - -/* - * Note: This function must be called with slot->lock held - */ static void handle_link_event(struct slot *p_slot, u32 event) { struct controller *ctrl = p_slot->ctrl; @@ -378,14 +364,14 @@ static void interrupt_event_handler(struct work_struct *work) pciehp_green_led_off(p_slot); break; case INT_PRESENCE_ON: - handle_surprise_event(p_slot); + pciehp_queue_power_work(p_slot, ENABLE_REQ); break; case INT_PRESENCE_OFF: /* * Regardless of surprise capability, we need to * definitely remove a card that has been pulled out! */ - handle_surprise_event(p_slot); + pciehp_queue_power_work(p_slot, DISABLE_REQ); break; case INT_LINK_UP: case INT_LINK_DOWN: |