From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Wed, 21 Jun 2017 10:30:40 +0000 (+0200)
Subject: s390/pci: provide more debug information
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=be2c36769f6340322c5367586adad6c3ce1ed51a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

s390/pci: provide more debug information

Add some debug data to observe the lifetime of the
architecture specific device information.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 114b390d80f9..d5c7444a0c05 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -772,6 +772,7 @@ void pcibios_remove_bus(struct pci_bus *bus)
 	list_del(&zdev->entry);
 	spin_unlock(&zpci_list_lock);
 
+	zpci_dbg(3, "rem fid:%x\n", zdev->fid);
 	kfree(zdev);
 }
 
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 3a5cd84e5a3b..bd534b4d40e3 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -193,12 +193,12 @@ out:
 int clp_add_pci_device(u32 fid, u32 fh, int configured)
 {
 	struct zpci_dev *zdev;
-	int rc;
+	int rc = -ENOMEM;
 
 	zpci_dbg(3, "add fid:%x, fh:%x, c:%d\n", fid, fh, configured);
 	zdev = kzalloc(sizeof(*zdev), GFP_KERNEL);
 	if (!zdev)
-		return -ENOMEM;
+		goto error;
 
 	zdev->fh = fh;
 	zdev->fid = fid;
@@ -219,6 +219,7 @@ int clp_add_pci_device(u32 fid, u32 fh, int configured)
 	return 0;
 
 error:
+	zpci_dbg(0, "add fid:%x, rc:%d\n", fid, rc);
 	kfree(zdev);
 	return rc;
 }