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authorrajesh.shah@intel.com <rajesh.shah@intel.com>2005-10-31 16:20:13 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2005-11-10 16:09:15 -0800
commit8239def1b56e0c0c8e0fd3754a12df3d60a64ed7 (patch)
tree330aad5965a885cbc8cd17f92cc8ac82e81a7a6b /drivers/pci
parenta3a45ec8f8edaf088449e37fe81c99cbf580b9bd (diff)
downloadop-kernel-dev-8239def1b56e0c0c8e0fd3754a12df3d60a64ed7.zip
op-kernel-dev-8239def1b56e0c0c8e0fd3754a12df3d60a64ed7.tar.gz
[PATCH] pciehp: fix handling of power faults during hotplug
The current pciehp implementation reports a power-fail error even if the condition has cleared by the time the corresponding interrupt handling code gets a chance to run. This patch fixes this problem. Signed-off-by: Rajesh Shah <rajesh.shah@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 2d2539b..f2b9b76 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -481,7 +481,6 @@ static int hpc_query_power_fault(struct slot * slot)
u16 slot_status;
u8 pwr_fault;
int retval = 0;
- u8 status;
DBG_ENTER_ROUTINE
@@ -493,15 +492,13 @@ static int hpc_query_power_fault(struct slot * slot)
retval = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(slot->ctrl->cap_base), slot_status);
if (retval) {
- err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
+ err("%s : Cannot check for power fault\n", __FUNCTION__);
return retval;
}
pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
- status = (pwr_fault != 1) ? 1 : 0;
DBG_LEAVE_ROUTINE
- /* Note: Logic 0 => fault */
- return status;
+ return pwr_fault;
}
static int hpc_set_attention_status(struct slot *slot, u8 value)
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