1 files changed, 41 insertions, 20 deletions

diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 441e38c95a85..b87569e96b16 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -1,12 +1,32 @@
 /*
- * vgaarb.c
+ * vgaarb.c: Implements the VGA arbitration. For details refer to
+ * Documentation/vgaarbiter.txt
+ *
  *
  * (C) Copyright 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
  * (C) Copyright 2007 Paulo R. Zanoni <przanoni@gmail.com>
  * (C) Copyright 2007, 2009 Tiago Vignatti <vignatti@freedesktop.org>
  *
- * Implements the VGA arbitration. For details refer to
- * Documentation/vgaarbiter.txt
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS
+ * IN THE SOFTWARE.
+ *
  */
 
 #include <linux/module.h>
@@ -155,8 +175,8 @@ static struct vga_device *__vga_tryget(struct vga_device *vgadev,
             (vgadev->decodes & VGA_RSRC_LEGACY_MEM))
                 rsrc |= VGA_RSRC_LEGACY_MEM;
 
-        pr_devel("%s: %d\n", __func__, rsrc);
-        pr_devel("%s: owns: %d\n", __func__, vgadev->owns);
+        pr_debug("%s: %d\n", __func__, rsrc);
+        pr_debug("%s: owns: %d\n", __func__, vgadev->owns);
 
         /* Check what resources we need to acquire */
         wants = rsrc & ~vgadev->owns;
@@ -268,7 +288,7 @@ static void __vga_put(struct vga_device *vgadev, unsigned int rsrc)
 {
         unsigned int old_locks = vgadev->locks;
 
-        pr_devel("%s\n", __func__);
+        pr_debug("%s\n", __func__);
 
         /* Update our counters, and account for equivalent legacy resources
          * if we decode them
@@ -575,6 +595,7 @@ static inline void vga_update_device_decodes(struct vga_device *vgadev,
                 else
                         vga_decode_count--;
         }
+        pr_debug("vgaarb: decoding count now is: %d\n", vga_decode_count);
 }
 
 void __vga_set_legacy_decoding(struct pci_dev *pdev, unsigned int decodes, bool userspace)
@@ -831,7 +852,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                 curr_pos += 5;
                 remaining -= 5;
 
-                pr_devel("client 0x%p called 'lock'\n", priv);
+                pr_debug("client 0x%p called 'lock'\n", priv);
 
                 if (!vga_str_to_iostate(curr_pos, remaining, &io_state)) {
                         ret_val = -EPROTO;
@@ -867,7 +888,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                 curr_pos += 7;
                 remaining -= 7;
 
-                pr_devel("client 0x%p called 'unlock'\n", priv);
+                pr_debug("client 0x%p called 'unlock'\n", priv);
 
                 if (strncmp(curr_pos, "all", 3) == 0)
                         io_state = VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM;
@@ -917,7 +938,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                 curr_pos += 8;
                 remaining -= 8;
 
-                pr_devel("client 0x%p called 'trylock'\n", priv);
+                pr_debug("client 0x%p called 'trylock'\n", priv);
 
                 if (!vga_str_to_iostate(curr_pos, remaining, &io_state)) {
                         ret_val = -EPROTO;
@@ -961,7 +982,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
 
                 curr_pos += 7;
                 remaining -= 7;
-                pr_devel("client 0x%p called 'target'\n", priv);
+                pr_debug("client 0x%p called 'target'\n", priv);
                 /* if target is default */
                 if (!strncmp(curr_pos, "default", 7))
                         pdev = pci_dev_get(vga_default_device());
@@ -971,11 +992,11 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                                 ret_val = -EPROTO;
                                 goto done;
                         }
-                        pr_devel("vgaarb: %s ==> %x:%x:%x.%x\n", curr_pos,
+                        pr_debug("vgaarb: %s ==> %x:%x:%x.%x\n", curr_pos,
                                 domain, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
 
                         pbus = pci_find_bus(domain, bus);
-                        pr_devel("vgaarb: pbus %p\n", pbus);
+                        pr_debug("vgaarb: pbus %p\n", pbus);
                         if (pbus == NULL) {
                                 pr_err("vgaarb: invalid PCI domain and/or bus address %x:%x\n",
                                         domain, bus);
@@ -983,7 +1004,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                                 goto done;
                         }
                         pdev = pci_get_slot(pbus, devfn);
-                        pr_devel("vgaarb: pdev %p\n", pdev);
+                        pr_debug("vgaarb: pdev %p\n", pdev);
                         if (!pdev) {
                                 pr_err("vgaarb: invalid PCI address %x:%x\n",
                                         bus, devfn);
@@ -993,7 +1014,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
                 }
 
                 vgadev = vgadev_find(pdev);
-                pr_devel("vgaarb: vgadev %p\n", vgadev);
+                pr_debug("vgaarb: vgadev %p\n", vgadev);
                 if (vgadev == NULL) {
                         pr_err("vgaarb: this pci device is not a vga device\n");
                         pci_dev_put(pdev);
@@ -1029,7 +1050,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
         } else if (strncmp(curr_pos, "decodes ", 8) == 0) {
                 curr_pos += 8;
                 remaining -= 8;
-                pr_devel("vgaarb: client 0x%p called 'decodes'\n", priv);
+                pr_debug("vgaarb: client 0x%p called 'decodes'\n", priv);
 
                 if (!vga_str_to_iostate(curr_pos, remaining, &io_state)) {
                         ret_val = -EPROTO;
@@ -1058,7 +1079,7 @@ static unsigned int vga_arb_fpoll(struct file *file, poll_table * wait)
 {
         struct vga_arb_private *priv = file->private_data;
 
-        pr_devel("%s\n", __func__);
+        pr_debug("%s\n", __func__);
 
         if (priv == NULL)
                 return -ENODEV;
@@ -1071,7 +1092,7 @@ static int vga_arb_open(struct inode *inode, struct file *file)
         struct vga_arb_private *priv;
         unsigned long flags;
 
-        pr_devel("%s\n", __func__);
+        pr_debug("%s\n", __func__);
 
         priv = kmalloc(sizeof(struct vga_arb_private), GFP_KERNEL);
         if (priv == NULL)
@@ -1101,7 +1122,7 @@ static int vga_arb_release(struct inode *inode, struct file *file)
         unsigned long flags;
         int i;
 
-        pr_devel("%s\n", __func__);
+        pr_debug("%s\n", __func__);
 
         if (priv == NULL)
                 return -ENODEV;
@@ -1112,7 +1133,7 @@ static int vga_arb_release(struct inode *inode, struct file *file)
                 uc = &priv->cards[i];
                 if (uc->pdev == NULL)
                         continue;
-                pr_devel("uc->io_cnt == %d, uc->mem_cnt == %d\n",
+                pr_debug("uc->io_cnt == %d, uc->mem_cnt == %d\n",
                          uc->io_cnt, uc->mem_cnt);
                 while (uc->io_cnt--)
                         vga_put(uc->pdev, VGA_RSRC_LEGACY_IO);
@@ -1165,7 +1186,7 @@ static int pci_notify(struct notifier_block *nb, unsigned long action,
         struct pci_dev *pdev = to_pci_dev(dev);
         bool notify = false;
 
-        pr_devel("%s\n", __func__);
+        pr_debug("%s\n", __func__);
 
         /* For now we're only intereted in devices added and removed. I didn't
          * test this thing here, so someone needs to double check for the