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authorSebastian Ott <sebott@linux.vnet.ibm.com>2013-04-16 14:11:14 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-04-17 14:07:35 +0200
commita2ab833360abbed3321fd694b69a5a32ee15785f (patch)
treebdf3d75949f7510d4bacfcbddcbe640c9e4cdca3 /drivers/pci/hotplug
parentea793788f8ec868e655920f4726b2bd6a881e5ae (diff)
s390/pci: debug device states
Use the debugfs to keep track of a pci function's status changes. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/pci/hotplug')
-rw-r--r--drivers/pci/hotplug/s390_pci_hpc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c
index 7db249a2501..6053e7221b5 100644
--- a/drivers/pci/hotplug/s390_pci_hpc.c
+++ b/drivers/pci/hotplug/s390_pci_hpc.c
@@ -16,6 +16,7 @@
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include <linux/init.h>
+#include <asm/pci_debug.h>
#include <asm/sclp.h>
#define SLOT_NAME_SIZE 10
@@ -49,6 +50,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
return -EIO;
rc = sclp_pci_configure(slot->zdev->fid);
+ zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, rc);
if (!rc) {
slot->zdev->state = ZPCI_FN_STATE_CONFIGURED;
/* automatically scan the device after is was configured */
@@ -70,6 +72,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
* or do we need to trigger that here?
*/
rc = sclp_pci_deconfigure(slot->zdev->fid);
+ zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, rc);
if (!rc) {
/* Fixme: better call List-PCI to find the disabled FH
for the FID since the FH should be opaque... */