[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>
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@ -481,7 +481,6 @@ static int hpc_query_power_fault(struct slot * slot)
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u16 slot_status;
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u8 pwr_fault;
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int retval = 0;
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u8 status;
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DBG_ENTER_ROUTINE
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@ -493,15 +492,13 @@ static int hpc_query_power_fault(struct slot * slot)
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retval = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(slot->ctrl->cap_base), slot_status);
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if (retval) {
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err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
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err("%s : Cannot check for power fault\n", __FUNCTION__);
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return retval;
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}
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pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
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status = (pwr_fault != 1) ? 1 : 0;
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DBG_LEAVE_ROUTINE
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/* Note: Logic 0 => fault */
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return status;
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return pwr_fault;
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}
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static int hpc_set_attention_status(struct slot *slot, u8 value)
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