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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>
This commit is contained in:
Thierry Reding 2015-08-12 16:32:07 +02:00 committed by Daniel Vetter
parent 8b7e2e865f
commit 5d90ccf908
1 changed files with 60 additions and 42 deletions
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102
drivers/gpu/vga/vgaarb.c
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@ -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;
}