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

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

[jgross@suse.com] Move the "#define pr_fmt" above the #includes in
                  order to avoid build warnings due to redefinition.

Signed-off-by: zhaoxiao <zhaoxiao@uniontech.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20210825114111.29009-1-zhaoxiao@uniontech.com
Signed-off-by: Juergen Gross <jgross@suse.com>

diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c
index 96d7f7d39cb917a0957403aaf59ec8d6339af9a4..62ac4898df1a77a375d99c38af1b58af4a368c18 100644 (file)
--- a/arch/x86/xen/platform-pci-unplug.c
+++ b/arch/x86/xen/platform-pci-unplug.c
@@ -7,6 +7,8 @@
  * Copyright (c) 2010, Citrix
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/export.h>
@@ -30,13 +32,13 @@ 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 +46,12 @@ 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 +157,12 @@ 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 +202,7 @@ 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;