[PATCH] x86: xen: platform-pci-unplug: use pr_err() and pr_warn() instead of raw printk()

[zhaoxiao <zhaoxiao@xxxxxxxxxxxxx>]

Since we have the nice helpers pr_err() and pr_warn(), use them instead
of raw printk().

Signed-off-by: zhaoxiao <zhaoxiao@xxxxxxxxxxxxx>
---
 arch/x86/xen/platform-pci-unplug.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/arch/x86/xen/platform-pci-unplug.c 
b/arch/x86/xen/platform-pci-unplug.c
index 96d7f7d39cb9..e84bff542539 100644
--- a/arch/x86/xen/platform-pci-unplug.c
+++ b/arch/x86/xen/platform-pci-unplug.c
@@ -19,6 +19,9 @@
 #define XEN_PLATFORM_ERR_PROTOCOL -2
 #define XEN_PLATFORM_ERR_BLACKLIST -3
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+
 /* store the value of xen_emul_unplug after the unplug is done */
 static int xen_platform_pci_unplug;
 static int xen_emul_unplug;
@@ -30,13 +33,13 @@ static int check_platform_magic(void)
 
        magic = inw(XEN_IOPORT_MAGIC);
        if (magic != XEN_IOPORT_MAGIC_VAL) {
-               printk(KERN_ERR "Xen Platform PCI: unrecognised magic value\n");
+               pr_err("Xen Platform PCI: unrecognised magic value\n");
                return XEN_PLATFORM_ERR_MAGIC;
        }
 
        protocol = inb(XEN_IOPORT_PROTOVER);
 
-       printk(KERN_DEBUG "Xen Platform PCI: I/O protocol version %d\n",
+       pr_debug("Xen Platform PCI: I/O protocol version %d\n",
                        protocol);
 
        switch (protocol) {
@@ -44,12 +47,12 @@ static int check_platform_magic(void)
                outw(XEN_IOPORT_LINUX_PRODNUM, XEN_IOPORT_PRODNUM);
                outl(XEN_IOPORT_LINUX_DRVVER, XEN_IOPORT_DRVVER);
                if (inw(XEN_IOPORT_MAGIC) != XEN_IOPORT_MAGIC_VAL) {
-                       printk(KERN_ERR "Xen Platform: blacklisted by host\n");
+                       pr_err("Xen Platform: blacklisted by host\n");
                        return XEN_PLATFORM_ERR_BLACKLIST;
                }
                break;
        default:
-               printk(KERN_WARNING "Xen Platform PCI: unknown I/O protocol 
version\n");
+               pr_warn("Xen Platform PCI: unknown I/O protocol version\n");
                return XEN_PLATFORM_ERR_PROTOCOL;
        }
 
@@ -155,12 +158,12 @@ void xen_unplug_emulated_devices(void)
         * been compiled for this kernel (modules or built-in are both OK). */
        if (!xen_emul_unplug) {
                if (xen_must_unplug_nics()) {
-                       printk(KERN_INFO "Netfront and the Xen platform PCI 
driver have "
+                       pr_info("Netfront and the Xen platform PCI driver have "
                                        "been compiled for this kernel: unplug 
emulated NICs.\n");
                        xen_emul_unplug |= XEN_UNPLUG_ALL_NICS;
                }
                if (xen_must_unplug_disks()) {
-                       printk(KERN_INFO "Blkfront and the Xen platform PCI 
driver have "
+                       pr_info("Blkfront and the Xen platform PCI driver have "
                                        "been compiled for this kernel: unplug 
emulated disks.\n"
                                        "You might have to change the root 
device\n"
                                        "from /dev/hd[a-d] to /dev/xvd[a-d]\n"
@@ -200,7 +203,7 @@ static int __init parse_xen_emul_unplug(char *arg)
                else if (!strncmp(p, "never", l))
                        xen_emul_unplug |= XEN_UNPLUG_NEVER;
                else
-                       printk(KERN_WARNING "unrecognised option '%s' "
+                       pr_warn("unrecognised option '%s' "
                                 "in parameter 'xen_emul_unplug'\n", p);
        }
        return 0;
-- 
2.20.1