15 files changed, 222 insertions, 54 deletions

diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index aa109cbe0e6e..d607f53d8afc 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -372,6 +372,17 @@ static int __devinit agp_efficeon_probe(struct pci_dev *pdev,
         bridge->capndx = cap_ptr;
 
         /*
+        * If the device has not been properly setup, the following will catch
+        * the problem and should stop the system from crashing.
+        * 20030610 - hamish@zot.org
+        */
+        if (pci_enable_device(pdev)) {
+                printk(KERN_ERR PFX "Unable to Enable PCI device\n");
+                agp_put_bridge(bridge);
+                return -ENODEV;
+        }
+
+        /*
         * The following fixes the case where the BIOS has "forgotten" to
         * provide an address range for the GART.
         * 20030610 - hamish@zot.org
@@ -385,17 +396,6 @@ static int __devinit agp_efficeon_probe(struct pci_dev *pdev,
                 }
         }
 
-        /*
-        * If the device has not been properly setup, the following will catch
-        * the problem and should stop the system from crashing.
-        * 20030610 - hamish@zot.org
-        */
-        if (pci_enable_device(pdev)) {
-                printk(KERN_ERR PFX "Unable to Enable PCI device\n");
-                agp_put_bridge(bridge);
-                return -ENODEV;
-        }
-
         /* Fill in the mode register */
         if (cap_ptr) {
                 pci_read_config_dword(pdev,
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index d836a71bf06d..ddf5def1b0da 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -816,9 +816,9 @@ static const struct intel_driver_description {
         { PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG,
             "HD Graphics", NULL, &intel_i965_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_IG,
-            "Sandybridge", NULL, &intel_i965_driver },
+            "Sandybridge", NULL, &intel_gen6_driver },
         { PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB, PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_IG,
-            "Sandybridge", NULL, &intel_i965_driver },
+            "Sandybridge", NULL, &intel_gen6_driver },
         { 0, 0, NULL, NULL, NULL }
 };
 
@@ -908,6 +908,17 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
         dev_info(&pdev->dev, "Intel %s Chipset\n", intel_agp_chipsets[i].name);
 
         /*
+        * If the device has not been properly setup, the following will catch
+        * the problem and should stop the system from crashing.
+        * 20030610 - hamish@zot.org
+        */
+        if (pci_enable_device(pdev)) {
+                dev_err(&pdev->dev, "can't enable PCI device\n");
+                agp_put_bridge(bridge);
+                return -ENODEV;
+        }
+
+        /*
         * The following fixes the case where the BIOS has "forgotten" to
         * provide an address range for the GART.
         * 20030610 - hamish@zot.org
@@ -921,17 +932,6 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
                 }
         }
 
-        /*
-        * If the device has not been properly setup, the following will catch
-        * the problem and should stop the system from crashing.
-        * 20030610 - hamish@zot.org
-        */
-        if (pci_enable_device(pdev)) {
-                dev_err(&pdev->dev, "can't enable PCI device\n");
-                agp_put_bridge(bridge);
-                return -ENODEV;
-        }
-
         /* Fill in the mode register */
         if (cap_ptr) {
                 pci_read_config_dword(pdev,
diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h
index 2547465d4658..c05e3e518268 100644
--- a/drivers/char/agp/intel-agp.h
+++ b/drivers/char/agp/intel-agp.h
@@ -60,6 +60,12 @@
 #define I810_PTE_LOCAL          0x00000002
 #define I810_PTE_VALID          0x00000001
 #define I830_PTE_SYSTEM_CACHED  0x00000006
+/* GT PTE cache control fields */
+#define GEN6_PTE_UNCACHED       0x00000002
+#define GEN6_PTE_LLC            0x00000004
+#define GEN6_PTE_LLC_MLC        0x00000006
+#define GEN6_PTE_GFDT           0x00000008
+
 #define I810_SMRAM_MISCC        0x70
 #define I810_GFX_MEM_WIN_SIZE   0x00010000
 #define I810_GFX_MEM_WIN_32M    0x00010000
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 9344216183a4..d22ffb811bf2 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -25,6 +25,10 @@
 #define USE_PCI_DMA_API 1
 #endif
 
+/* Max amount of stolen space, anything above will be returned to Linux */
+int intel_max_stolen = 32 * 1024 * 1024;
+EXPORT_SYMBOL(intel_max_stolen);
+
 static const struct aper_size_info_fixed intel_i810_sizes[] =
 {
         {64, 16384, 4},
@@ -104,7 +108,7 @@ static int intel_agp_map_memory(struct agp_memory *mem)
         DBG("try mapping %lu pages\n", (unsigned long)mem->page_count);
 
         if (sg_alloc_table(&st, mem->page_count, GFP_KERNEL))
-                return -ENOMEM;
+                goto err;
 
         mem->sg_list = sg = st.sgl;
 
@@ -113,11 +117,14 @@ static int intel_agp_map_memory(struct agp_memory *mem)
 
         mem->num_sg = pci_map_sg(intel_private.pcidev, mem->sg_list,
                                  mem->page_count, PCI_DMA_BIDIRECTIONAL);
-        if (unlikely(!mem->num_sg)) {
-                intel_agp_free_sglist(mem);
-                return -ENOMEM;
-        }
+        if (unlikely(!mem->num_sg))
+                goto err;
+
         return 0;
+
+err:
+        sg_free_table(&st);
+        return -ENOMEM;
 }
 
 static void intel_agp_unmap_memory(struct agp_memory *mem)
@@ -176,7 +183,7 @@ static void intel_agp_insert_sg_entries(struct agp_memory *mem,
         if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB ||
             agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
         {
-                cache_bits = I830_PTE_SYSTEM_CACHED;
+                cache_bits = GEN6_PTE_LLC_MLC;
         }
 
         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
@@ -710,7 +717,12 @@ static void intel_i830_init_gtt_entries(void)
                         break;
                 }
         }
-        if (gtt_entries > 0) {
+        if (!local && gtt_entries > intel_max_stolen) {
+                dev_info(&agp_bridge->dev->dev,
+                         "detected %dK stolen memory, trimming to %dK\n",
+                         gtt_entries / KB(1), intel_max_stolen / KB(1));
+                gtt_entries = intel_max_stolen / KB(4);
+        } else if (gtt_entries > 0) {
                 dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n",
                        gtt_entries / KB(1), local ? "local" : "stolen");
                 gtt_entries /= KB(4);
@@ -797,6 +809,10 @@ static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
 
         /* we have to call this as early as possible after the MMIO base address is known */
         intel_i830_init_gtt_entries();
+        if (intel_private.gtt_entries == 0) {
+                iounmap(intel_private.registers);
+                return -ENOMEM;
+        }
 
         agp_bridge->gatt_table = NULL;
 
@@ -1216,17 +1232,20 @@ static int intel_i915_get_gtt_size(void)
 
                 /* G33's GTT size defined in gmch_ctrl */
                 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
-                switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
-                case G33_PGETBL_SIZE_1M:
+                switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
+                case I830_GMCH_GMS_STOLEN_512:
+                        size = 512;
+                        break;
+                case I830_GMCH_GMS_STOLEN_1024:
                         size = 1024;
                         break;
-                case G33_PGETBL_SIZE_2M:
-                        size = 2048;
+                case I830_GMCH_GMS_STOLEN_8192:
+                        size = 8*1024;
                         break;
                 default:
                         dev_info(&agp_bridge->dev->dev,
                                  "unknown page table size 0x%x, assuming 512KB\n",
-                                (gmch_ctrl & G33_PGETBL_SIZE_MASK));
+                                (gmch_ctrl & I830_GMCH_GMS_MASK));
                         size = 512;
                 }
         } else {
@@ -1279,6 +1298,11 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
 
         /* we have to call this as early as possible after the MMIO base address is known */
         intel_i830_init_gtt_entries();
+        if (intel_private.gtt_entries == 0) {
+                iounmap(intel_private.gtt);
+                iounmap(intel_private.registers);
+                return -ENOMEM;
+        }
 
         agp_bridge->gatt_table = NULL;
 
@@ -1306,6 +1330,16 @@ static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
         return addr | bridge->driver->masks[type].mask;
 }
 
+static unsigned long intel_gen6_mask_memory(struct agp_bridge_data *bridge,
+                                            dma_addr_t addr, int type)
+{
+        /* Shift high bits down */
+        addr |= (addr >> 28) & 0xff;
+
+        /* Type checking must be done elsewhere */
+        return addr | bridge->driver->masks[type].mask;
+}
+
 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 {
         u16 snb_gmch_ctl;
@@ -1387,6 +1421,11 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
 
         /* we have to call this as early as possible after the MMIO base address is known */
         intel_i830_init_gtt_entries();
+        if (intel_private.gtt_entries == 0) {
+                iounmap(intel_private.gtt);
+                iounmap(intel_private.registers);
+                return -ENOMEM;
+        }
 
         agp_bridge->gatt_table = NULL;
 
@@ -1514,6 +1553,39 @@ static const struct agp_bridge_driver intel_i965_driver = {
 #endif
 };
 
+static const struct agp_bridge_driver intel_gen6_driver = {
+        .owner                  = THIS_MODULE,
+        .aperture_sizes         = intel_i830_sizes,
+        .size_type              = FIXED_APER_SIZE,
+        .num_aperture_sizes     = 4,
+        .needs_scratch_page     = true,
+        .configure              = intel_i9xx_configure,
+        .fetch_size             = intel_i9xx_fetch_size,
+        .cleanup                = intel_i915_cleanup,
+        .mask_memory            = intel_gen6_mask_memory,
+        .masks                  = intel_i810_masks,
+        .agp_enable             = intel_i810_agp_enable,
+        .cache_flush            = global_cache_flush,
+        .create_gatt_table      = intel_i965_create_gatt_table,
+        .free_gatt_table        = intel_i830_free_gatt_table,
+        .insert_memory          = intel_i915_insert_entries,
+        .remove_memory          = intel_i915_remove_entries,
+        .alloc_by_type          = intel_i830_alloc_by_type,
+        .free_by_type           = intel_i810_free_by_type,
+        .agp_alloc_page         = agp_generic_alloc_page,
+        .agp_alloc_pages        = agp_generic_alloc_pages,
+        .agp_destroy_page       = agp_generic_destroy_page,
+        .agp_destroy_pages      = agp_generic_destroy_pages,
+        .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+        .chipset_flush          = intel_i915_chipset_flush,
+#ifdef USE_PCI_DMA_API
+        .agp_map_page           = intel_agp_map_page,
+        .agp_unmap_page         = intel_agp_unmap_page,
+        .agp_map_memory         = intel_agp_map_memory,
+        .agp_unmap_memory       = intel_agp_unmap_memory,
+#endif
+};
+
 static const struct agp_bridge_driver intel_g33_driver = {
         .owner                  = THIS_MODULE,
         .aperture_sizes         = intel_i830_sizes,
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 89d871ef8c2f..91917133ae0a 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -23,6 +23,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
+#include <linux/fs.h>
 #include <linux/module.h>
 #include <linux/cdev.h>
 #include <linux/list.h>
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 35cca4c7fb18..fa27d1676ee5 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -194,7 +194,7 @@ static int __init hvc_console_setup(struct console *co, char *options)
         return 0;
 }
 
-static struct console hvc_con_driver = {
+static struct console hvc_console = {
         .name           = "hvc",
         .write          = hvc_console_print,
         .device         = hvc_console_device,
@@ -220,7 +220,7 @@ static struct console hvc_con_driver = {
  */
 static int __init hvc_console_init(void)
 {
-        register_console(&hvc_con_driver);
+        register_console(&hvc_console);
         return 0;
 }
 console_initcall(hvc_console_init);
@@ -276,8 +276,8 @@ int hvc_instantiate(uint32_t vtermno, int index, const struct hv_ops *ops)
          * now (setup won't fail at this point).  It's ok to just
          * call register again if previously .setup failed.
          */
-        if (index == hvc_con_driver.index)
-                register_console(&hvc_con_driver);
+        if (index == hvc_console.index)
+                register_console(&hvc_console);
 
         return 0;
 }
@@ -641,7 +641,7 @@ int hvc_poll(struct hvc_struct *hp)
                 }
                 for (i = 0; i < n; ++i) {
 #ifdef CONFIG_MAGIC_SYSRQ
-                        if (hp->index == hvc_con_driver.index) {
+                        if (hp->index == hvc_console.index) {
                                 /* Handle the SysRq Hack */
                                 /* XXX should support a sequence */
                                 if (buf[i] == '\x0f') { /* ^O */
@@ -909,7 +909,7 @@ static void __exit hvc_exit(void)
                 tty_unregister_driver(hvc_driver);
                 /* return tty_struct instances allocated in hvc_init(). */
                 put_tty_driver(hvc_driver);
-                unregister_console(&hvc_con_driver);
+                unregister_console(&hvc_console);
         }
 }
 module_exit(hvc_exit);
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index d4b14ff1c4c1..1f4b6de65a2d 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -1255,7 +1255,7 @@ static int __init hvsi_console_setup(struct console *console, char *options)
         return 0;
 }
 
-static struct console hvsi_con_driver = {
+static struct console hvsi_console = {
         .name           = "hvsi",
         .write          = hvsi_console_print,
         .device         = hvsi_console_device,
@@ -1308,7 +1308,7 @@ static int __init hvsi_console_init(void)
         }
 
         if (hvsi_count)
-                register_console(&hvsi_con_driver);
+                register_console(&hvsi_console);
         return 0;
 }
 console_initcall(hvsi_console_init);
diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index 0f9cbf1aaf15..7a4f080f8356 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -387,7 +387,7 @@ static int n2rng_init_control(struct n2rng *np)
 
 static int n2rng_data_read(struct hwrng *rng, u32 *data)
 {
-        struct n2rng *np = (struct n2rng *) rng->priv;
+        struct n2rng *np = rng->priv;
         unsigned long ra = __pa(&np->test_data);
         int len;
 
@@ -762,12 +762,12 @@ static struct of_platform_driver n2rng_driver = {
 
 static int __init n2rng_init(void)
 {
-        return of_register_driver(&n2rng_driver, &of_bus_type);
+        return of_register_platform_driver(&n2rng_driver);
 }
 
 static void __exit n2rng_exit(void)
 {
-        of_unregister_driver(&n2rng_driver);
+        of_unregister_platform_driver(&n2rng_driver);
 }
 
 module_init(n2rng_init);
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 54109dc9240c..25be2102a60a 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -1315,10 +1315,14 @@ static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
         if (test_bit(EV_SND, dev->evbit))
                 return true;
 
-        if (test_bit(EV_KEY, dev->evbit))
+        if (test_bit(EV_KEY, dev->evbit)) {
                 for (i = KEY_RESERVED; i < BTN_MISC; i++)
                         if (test_bit(i, dev->keybit))
                                 return true;
+                for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++)
+                        if (test_bit(i, dev->keybit))
+                                return true;
+        }
 
         return false;
 }
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index f54dab8acdcd..a398ecdbd758 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -916,7 +916,7 @@ static int __init chr_dev_init(void)
                               NULL, devlist[minor].name);
         }
 
-        return 0;
+        return tty_init();
 }
 
 fs_initcall(chr_dev_init);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 8d85587b6d4f..caef35a46890 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -407,8 +407,8 @@ struct entropy_store {
         struct poolinfo *poolinfo;
         __u32 *pool;
         const char *name;
-        int limit;
         struct entropy_store *pull;
+        int limit;
 
         /* read-write data: */
         spinlock_t lock;
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 4561ce2fba6d..334cf5c8c8b6 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -4845,7 +4845,7 @@ static int register_test(struct slgt_info *info)
 {
         static unsigned short patterns[] =
                 {0x0000, 0xffff, 0xaaaa, 0x5555, 0x6969, 0x9696};
-        static unsigned int count = sizeof(patterns)/sizeof(patterns[0]);
+        static unsigned int count = ARRAY_SIZE(patterns);
         unsigned int i;
         int rc = 0;
 
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 24314a9cffe8..1030f8420137 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -623,7 +623,14 @@ static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
 
 static int tpm_tis_pnp_resume(struct pnp_dev *dev)
 {
-        return tpm_pm_resume(&dev->dev);
+        struct tpm_chip *chip = pnp_get_drvdata(dev);
+        int ret;
+
+        ret = tpm_pm_resume(&dev->dev);
+        if (!ret)
+                tpm_continue_selftest(chip);
+
+        return ret;
 }
 
 static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index d71f0fc34b46..507441ac6edb 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3128,7 +3128,7 @@ static struct cdev tty_cdev, console_cdev;
  * Ok, now we can initialize the rest of the tty devices and can count
  * on memory allocations, interrupts etc..
  */
-static int __init tty_init(void)
+int __init tty_init(void)
 {
         cdev_init(&tty_cdev, &tty_fops);
         if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
@@ -3149,4 +3149,4 @@ static int __init tty_init(void)
 #endif
         return 0;
 }
-module_init(tty_init);
+
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 7cdb6ee569cd..4a9eb3044e52 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -104,6 +104,7 @@
 #include <linux/io.h>
 #include <asm/system.h>
 #include <linux/uaccess.h>
+#include <linux/kdb.h>
 
 #define MAX_NR_CON_DRIVER 16
 
@@ -187,10 +188,15 @@ static DECLARE_WORK(console_work, console_callback);
  * fg_console is the current virtual console,
  * last_console is the last used one,
  * want_console is the console we want to switch to,
+ * saved_* variants are for save/restore around kernel debugger enter/leave
  */
 int fg_console;
 int last_console;
 int want_console = -1;
+int saved_fg_console;
+int saved_last_console;
+int saved_want_console;
+int saved_vc_mode;
 
 /*
  * For each existing display, we have a pointer to console currently visible
@@ -3414,6 +3420,78 @@ int con_is_bound(const struct consw *csw)
 EXPORT_SYMBOL(con_is_bound);
 
 /**
+ * con_debug_enter - prepare the console for the kernel debugger
+ * @sw: console driver
+ *
+ * Called when the console is taken over by the kernel debugger, this
+ * function needs to save the current console state, then put the console
+ * into a state suitable for the kernel debugger.
+ *
+ * RETURNS:
+ * Zero on success, nonzero if a failure occurred when trying to prepare
+ * the console for the debugger.
+ */
+int con_debug_enter(struct vc_data *vc)
+{
+        int ret = 0;
+
+        saved_fg_console = fg_console;
+        saved_last_console = last_console;
+        saved_want_console = want_console;
+        saved_vc_mode = vc->vc_mode;
+        vc->vc_mode = KD_TEXT;
+        console_blanked = 0;
+        if (vc->vc_sw->con_debug_enter)
+                ret = vc->vc_sw->con_debug_enter(vc);
+#ifdef CONFIG_KGDB_KDB
+        /* Set the initial LINES variable if it is not already set */
+        if (vc->vc_rows < 999) {
+                int linecount;
+                char lns[4];
+                const char *setargs[3] = {
+                        "set",
+                        "LINES",
+                        lns,
+                };
+                if (kdbgetintenv(setargs[0], &linecount)) {
+                        snprintf(lns, 4, "%i", vc->vc_rows);
+                        kdb_set(2, setargs);
+                }
+        }
+#endif /* CONFIG_KGDB_KDB */
+        return ret;
+}
+EXPORT_SYMBOL_GPL(con_debug_enter);
+
+/**
+ * con_debug_leave - restore console state
+ * @sw: console driver
+ *
+ * Restore the console state to what it was before the kernel debugger
+ * was invoked.
+ *
+ * RETURNS:
+ * Zero on success, nonzero if a failure occurred when trying to restore
+ * the console.
+ */
+int con_debug_leave(void)
+{
+        struct vc_data *vc;
+        int ret = 0;
+
+        fg_console = saved_fg_console;
+        last_console = saved_last_console;
+        want_console = saved_want_console;
+        vc_cons[fg_console].d->vc_mode = saved_vc_mode;
+
+        vc = vc_cons[fg_console].d;
+        if (vc->vc_sw->con_debug_leave)
+                ret = vc->vc_sw->con_debug_leave(vc);
+        return ret;
+}
+EXPORT_SYMBOL_GPL(con_debug_leave);
+
+/**
  * register_con_driver - register console driver to console layer
  * @csw: console driver
  * @first: the first console to take over, minimum value is 0