Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block

[karo-tx-linux.git] / arch / x86 / lguest / boot.c

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 3847e736702e1153cc7e654087ca716d6b55d7da..25da5bc8d83dc2ac8c84e8de6084acea77eb1ad3 100644 (file)
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1233,8 +1233,6 @@ static void write_bar_via_cfg(u32 cfg_offset, u32 off, u32 val)
 static void probe_pci_console(void)
 {
        u8 cap, common_cap = 0, device_cap = 0;
-       /* Offset within BAR0 */
-       u32 device_offset;
        u32 device_len;
 
        /* Avoid recursive printk into here. */
@@ -1258,24 +1256,16 @@ static void probe_pci_console(void)
                u8 vndr = read_pci_config_byte(0, 1, 0, cap);
                if (vndr == PCI_CAP_ID_VNDR) {
                        u8 type, bar;
-                       u32 offset, length;
 
                        type = read_pci_config_byte(0, 1, 0,
                            cap + offsetof(struct virtio_pci_cap, cfg_type));
                        bar = read_pci_config_byte(0, 1, 0,
                            cap + offsetof(struct virtio_pci_cap, bar));
-                       offset = read_pci_config(0, 1, 0,
-                           cap + offsetof(struct virtio_pci_cap, offset));
-                       length = read_pci_config(0, 1, 0,
-                           cap + offsetof(struct virtio_pci_cap, length));
 
                        switch (type) {
                        case VIRTIO_PCI_CAP_DEVICE_CFG:
-                               if (bar == 0) {
+                               if (bar == 0)
                                        device_cap = cap;
-                                       device_offset = offset;
-                                       device_len = length;
-                               }
                                break;
                        case VIRTIO_PCI_CAP_PCI_CFG:
                                console_access_cap = cap;
@@ -1297,13 +1287,16 @@ static void probe_pci_console(void)
         * emerg_wr.  If it doesn't support VIRTIO_CONSOLE_F_EMERG_WRITE
         * it should ignore the access.
         */
+       device_len = read_pci_config(0, 1, 0,
+                       device_cap + offsetof(struct virtio_pci_cap, length));
        if (device_len < (offsetof(struct virtio_console_config, emerg_wr)
                          + sizeof(u32))) {
                printk(KERN_ERR "lguest: console missing emerg_wr field\n");
                return;
        }
 
-       console_cfg_offset = device_offset;
+       console_cfg_offset = read_pci_config(0, 1, 0,
+                       device_cap + offsetof(struct virtio_pci_cap, offset));
        printk(KERN_INFO "lguest: Console via virtio-pci emerg_wr\n");
 }