vgaarb: Fix a few checkpatch errors and warnings

Wrap overly long lines (offending lines were mostly comments, so trivial
to fix up) and a number of other coding style issues pointed out by the
checkpatch tool.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 60 insertions, 42 deletions

diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 5f1bde5efc7f..a0b433456107 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -136,7 +136,6 @@ struct pci_dev *vga_default_device(void)
 {
         return vga_default;
 }
-
 EXPORT_SYMBOL_GPL(vga_default_device);
 
 void vga_set_default_device(struct pci_dev *pdev)
@@ -300,9 +299,9 @@ enable_them:
 
         pci_set_vga_state(vgadev->pdev, true, pci_bits, flags);
 
-        if (!vgadev->bridge_has_one_vga) {
+        if (!vgadev->bridge_has_one_vga)
                 vga_irq_set_state(vgadev, true);
-        }
+
         vgadev->owns |= wants;
 lock_them:
         vgadev->locks |= (rsrc & VGA_RSRC_LEGACY_MASK);
@@ -454,15 +453,15 @@ bail:
 }
 EXPORT_SYMBOL(vga_put);
 
-/* Rules for using a bridge to control a VGA descendant decoding:
-   if a bridge has only one VGA descendant then it can be used
-   to control the VGA routing for that device.
-   It should always use the bridge closest to the device to control it.
-   If a bridge has a direct VGA descendant, but also have a sub-bridge
-   VGA descendant then we cannot use that bridge to control the direct VGA descendant.
-   So for every device we register, we need to iterate all its parent bridges
-   so we can invalidate any devices using them properly.
-*/
+/*
+ * Rules for using a bridge to control a VGA descendant decoding: if a bridge
+ * has only one VGA descendant then it can be used to control the VGA routing
+ * for that device. It should always use the bridge closest to the device to
+ * control it. If a bridge has a direct VGA descendant, but also have a sub-
+ * bridge VGA descendant then we cannot use that bridge to control the direct
+ * VGA descendant. So for every device we register, we need to iterate all
+ * its parent bridges so we can invalidate any devices using them properly.
+ */
 static void vga_arbiter_check_bridge_sharing(struct vga_device *vgadev)
 {
         struct vga_device *same_bridge_vgadev;
@@ -486,21 +485,26 @@ static void vga_arbiter_check_bridge_sharing(struct vga_device *vgadev)
 
                         /* see if the share a bridge with this device */
                         if (new_bridge == bridge) {
-                                /* if their direct parent bridge is the same
-                                   as any bridge of this device then it can't be used
-                                   for that device */
+                                /*
+                                 * If their direct parent bridge is the same
+                                 * as any bridge of this device then it can't
+                                 * be used for that device.
+                                 */
                                 same_bridge_vgadev->bridge_has_one_vga = false;
                         }
 
-                        /* now iterate the previous devices bridge hierarchy */
-                        /* if the new devices parent bridge is in the other devices
-                           hierarchy then we can't use it to control this device */
+                        /*
+                         * Now iterate the previous devices bridge hierarchy.
+                         * If the new devices parent bridge is in the other
+                         * devices hierarchy then we can't use it to control
+                         * this device
+                         */
                         while (bus) {
                                 bridge = bus->self;
-                                if (bridge) {
-                                        if (bridge == vgadev->pdev->bus->self)
-                                                vgadev->bridge_has_one_vga = false;
-                                }
+
+                                if (bridge && bridge == vgadev->pdev->bus->self)
+                                        vgadev->bridge_has_one_vga = false;
+
                                 bus = bus->parent;
                         }
                 }
@@ -530,9 +534,9 @@ static bool vga_arbiter_add_pci_device(struct pci_dev *pdev)
         vgadev = kmalloc(sizeof(struct vga_device), GFP_KERNEL);
         if (vgadev == NULL) {
                 pr_err("failed to allocate pci device\n");
-                /* What to do on allocation failure ? For now, let's
-                 * just do nothing, I'm not sure there is anything saner
-                 * to be done
+                /*
+                 * What to do on allocation failure ? For now, let's just do
+                 * nothing, I'm not sure there is anything saner to be done.
                  */
                 return false;
         }
@@ -568,8 +572,8 @@ static bool vga_arbiter_add_pci_device(struct pci_dev *pdev)
                 bridge = bus->self;
                 if (bridge) {
                         u16 l;
-                        pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
-                                             &l);
+
+                        pci_read_config_word(bridge, PCI_BRIDGE_CONTROL, &l);
                         if (!(l & PCI_BRIDGE_CTL_VGA)) {
                                 vgadev->owns = 0;
                                 break;
@@ -677,7 +681,9 @@ static inline void vga_update_device_decodes(struct vga_device *vgadev,
         pr_debug("decoding count now is: %d\n", vga_decode_count);
 }
 
-static void __vga_set_legacy_decoding(struct pci_dev *pdev, unsigned int decodes, bool userspace)
+static void __vga_set_legacy_decoding(struct pci_dev *pdev,
+                                      unsigned int decodes,
+                                      bool userspace)
 {
         struct vga_device *vgadev;
         unsigned long flags;
@@ -713,7 +719,8 @@ EXPORT_SYMBOL(vga_set_legacy_decoding);
 /* call with NULL to unregister */
 int vga_client_register(struct pci_dev *pdev, void *cookie,
                         void (*irq_set_state)(void *cookie, bool state),
-                        unsigned int (*set_vga_decode)(void *cookie, bool decode))
+                        unsigned int (*set_vga_decode)(void *cookie,
+                                                       bool decode))
 {
         int ret = -ENODEV;
         struct vga_device *vgadev;
@@ -833,7 +840,7 @@ static int vga_pci_str_to_vars(char *buf, int count, unsigned int *domain,
         return 1;
 }
 
-static ssize_t vga_arb_read(struct file *file, char __user * buf,
+static ssize_t vga_arb_read(struct file *file, char __user *buf,
                             size_t count, loff_t *ppos)
 {
         struct vga_arb_private *priv = file->private_data;
@@ -900,7 +907,7 @@ done:
  * TODO: To avoid parsing inside kernel and to improve the speed we may
  * consider use ioctl here
  */
-static ssize_t vga_arb_write(struct file *file, const char __user * buf,
+static ssize_t vga_arb_write(struct file *file, const char __user *buf,
                              size_t count, loff_t *ppos)
 {
         struct vga_arb_private *priv = file->private_data;
@@ -1154,7 +1161,7 @@ done:
         return ret_val;
 }
 
-static unsigned int vga_arb_fpoll(struct file *file, poll_table * wait)
+static unsigned int vga_arb_fpoll(struct file *file, poll_table *wait)
 {
         struct vga_arb_private *priv = file->private_data;
 
@@ -1250,7 +1257,8 @@ static void vga_arbiter_notify_clients(void)
                 else
                         new_state = true;
                 if (vgadev->set_vga_decode) {
-                        new_decodes = vgadev->set_vga_decode(vgadev->cookie, new_state);
+                        new_decodes = vgadev->set_vga_decode(vgadev->cookie,
+                                                             new_state);
                         vga_update_device_decodes(vgadev, new_decodes);
                 }
         }
@@ -1320,17 +1328,25 @@ static int __init vga_arb_device_init(void)
 
         list_for_each_entry(vgadev, &vga_list, list) {
 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
-                /* Override I/O based detection done by vga_arbiter_add_pci_device()
-                 * as it may take the wrong device (e.g. on Apple system under EFI).
+                /*
+                 * Override vga_arbiter_add_pci_device()'s I/O based detection
+                 * as it may take the wrong device (e.g. on Apple system under
+                 * EFI).
                  *
-                 * Select the device owning the boot framebuffer if there is one.
+                 * Select the device owning the boot framebuffer if there is
+                 * one.
                  */
-                resource_size_t start, end;
+                resource_size_t start, end, limit;
+                unsigned long flags;
                 int i;
 
+                limit = screen_info.lfb_base + screen_info.lfb_size;
+
                 /* Does firmware framebuffer belong to us? */
                 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-                        if (!(pci_resource_flags(vgadev->pdev, i) & IORESOURCE_MEM))
+                        flags = pci_resource_flags(vgadev->pdev, i);
+
+                        if ((flags & IORESOURCE_MEM) == 0)
                                 continue;
 
                         start = pci_resource_start(vgadev->pdev, i);
@@ -1339,9 +1355,9 @@ static int __init vga_arb_device_init(void)
                         if (!start || !end)
                                 continue;
 
-                        if (screen_info.lfb_base < start ||
-                            (screen_info.lfb_base + screen_info.lfb_size) >= end)
+                        if (screen_info.lfb_base < start || limit >= end)
                                 continue;
+
                         if (!vga_default_device())
                                 pr_info("setting as boot device: PCI:%s\n",
                                         pci_name(vgadev->pdev));
@@ -1352,9 +1368,11 @@ static int __init vga_arb_device_init(void)
                 }
 #endif
                 if (vgadev->bridge_has_one_vga)
-                        pr_info("bridge control possible %s\n", pci_name(vgadev->pdev));
+                        pr_info("bridge control possible %s\n",
+                                pci_name(vgadev->pdev));
                 else
-                        pr_info("no bridge control possible %s\n", pci_name(vgadev->pdev));
+                        pr_info("no bridge control possible %s\n",
+                                pci_name(vgadev->pdev));
         }
         return rc;
 }