From: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Date: Wed, 22 Mar 2006 05:49:33 +0000 (+0900)
Subject: [PATCH] acpiphp: turn off slot power at error case
X-Git-Tag: v2.6.18-rc1~858^2~135^2~25
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cde0e5d722c77d1194f40de54a99c90afe365480;p=karo-tx-linux.git

[PATCH] acpiphp: turn off slot power at error case

When acpiphp_enable_slot() is failed, acpiphp does not change
the slot->flags. Therefore, when user tries to read power
status, acpiphp_get_power_status() returns the enable status
whether the slot is not really enabled.

This patch fixes this BUG.

Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index bbe27c16bc3d..610a530232ff 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -1592,9 +1592,15 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
 	if (retval)
 		goto err_exit;
 
-	if (get_slot_status(slot) == ACPI_STA_ALL)
+	if (get_slot_status(slot) == ACPI_STA_ALL) {
 		/* configure all functions */
 		retval = enable_device(slot);
+		if (retval)
+			power_off_slot(slot);
+	} else {
+		dbg("%s: Slot status is not ACPI_STA_ALL\n", __FUNCTION__);
+		power_off_slot(slot);
+	}
 
  err_exit:
 	mutex_unlock(&slot->crit_sect);