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PCI: pciehp: Add reset_slot() method

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PCIe hotplug has a bus per slot, so we can just use a normal
secondary bus reset.  However, if a slot supports surprise removal,
a bus reset can be seen as a presence detection change triggering
a hot-remove followed by a hot-add.  Disable presence detection from
triggering an interrupt or being polled around the bus reset.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Alex Williamson
2013-08-08 14:09:37 -06:00
committed by Bjorn Helgaas
parent 5c32b35b00
commit 2e35afaefe
3 changed files with 44 additions and 0 deletions
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drivers/pci/hotplug/pciehp.h
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@@ -155,6 +155,7 @@ void pciehp_green_led_off(struct slot *slot);
void pciehp_green_led_blink(struct slot *slot);
int pciehp_check_link_status(struct controller *ctrl);
void pciehp_release_ctrl(struct controller *ctrl);
int pciehp_reset_slot(struct slot *slot, int probe);
static inline const char *slot_name(struct slot *slot)
{