xen/pciback: Cleanup the driver based on checkpatch warnings and errors.

Checkpatch found some extra warnings and errors. This mega
patch fixes them all in one big swoop. We also spruce
up the pcistub_ids to use DEFINE_PCI_DEVICE_TABLE macro
(suggested by Jan Beulich).
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

drivers/xen/xen-pciback/pci_stub.c

@@ -13,7 +13,7 @@
 #include <linux/pci.h>
 #include <linux/wait.h>
 #include <linux/sched.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <xen/events.h>
 #include <asm/xen/pci.h>
 #include <asm/xen/hypervisor.h>
@@ -486,7 +486,7 @@ static void pcistub_remove(struct pci_dev *dev)
 	}
 }
 
-static const struct pci_device_id pcistub_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(pcistub_ids) = {
 	{
 	 .vendor = PCI_ANY_ID,
 	 .device = PCI_ANY_ID,
@@ -592,7 +592,7 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	if (test_bit(_XEN_PCIF_active,
 		(unsigned long *)&psdev->pdev->sh_info->flags)) {
 		dev_dbg(&psdev->dev->dev,
-			"schedule pci_conf service in pciback \n");
+			"schedule pci_conf service in pciback\n");
 		test_and_schedule_op(psdev->pdev);
 	}
 

drivers/xen/xen-pciback/pciback.h

@@ -12,7 +12,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <xen/interface/io/pciif.h>
 
 struct pci_dev_entry {

drivers/xen/xen-pciback/xenbus.c

@@ -695,8 +695,8 @@ int __init pciback_xenbus_register(void)
 {
 	pciback_wq = create_workqueue("pciback_workqueue");
 	if (!pciback_wq) {
-		printk(KERN_ERR "pciback_xenbus_register: create"
-			"pciback_workqueue failed\n");
+		printk(KERN_ERR "%s: create"
+			"pciback_workqueue failed\n", __func__);
 		return -EFAULT;
 	}
 	return xenbus_register_backend(&xenbus_pciback_driver);