#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/console.h>
-#ifdef CONFIG_KMOD
#include <linux/kmod.h>
-#endif
#include <linux/err.h>
#include <linux/device.h>
#include <linux/efi.h>
struct fb_info *registered_fb[FB_MAX] __read_mostly;
int num_registered_fb __read_mostly;
+int lock_fb_info(struct fb_info *info)
+{
+ mutex_lock(&info->lock);
+ if (!info->fbops) {
+ mutex_unlock(&info->lock);
+ return 0;
+ }
+ return 1;
+}
+EXPORT_SYMBOL(lock_fb_info);
+
/*
* Helpers
*/
greenshift = info->var.green.offset;
blueshift = info->var.blue.offset;
- for (i = 32; i < logo->clutsize; i++)
+ for (i = 32; i < 32 + logo->clutsize; i++)
palette[i] = i << redshift | i << greenshift | i << blueshift;
}
fb_logo_ex_num = 0;
for (i = 0; i < fb_logo_ex_num; i++) {
+ if (fb_logo_ex[i].logo->type != fb_logo.logo->type) {
+ fb_logo_ex[i].logo = NULL;
+ continue;
+ }
height += fb_logo_ex[i].logo->height;
if (height > yres) {
height -= fb_logo_ex[i].logo->height;
return (cnt) ? cnt : err;
}
-#ifdef CONFIG_KMOD
-static void try_to_load(int fb)
-{
- request_module("fb%d", fb);
-}
-#endif /* CONFIG_KMOD */
-
int
fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var)
{
struct fb_fix_screeninfo *fix = &info->fix;
- int xoffset = var->xoffset;
- int yoffset = var->yoffset;
- int err = 0, yres = info->var.yres;
+ unsigned int yres = info->var.yres;
+ int err = 0;
if (var->yoffset > 0) {
if (var->vmode & FB_VMODE_YWRAP) {
(var->xoffset % fix->xpanstep)))
err = -EINVAL;
- if (err || !info->fbops->fb_pan_display || xoffset < 0 ||
- yoffset < 0 || var->yoffset + yres > info->var.yres_virtual ||
+ if (err || !info->fbops->fb_pan_display ||
+ var->yoffset + yres > info->var.yres_virtual ||
var->xoffset + info->var.xres > info->var.xres_virtual)
return -EINVAL;
info->flags &= ~FBINFO_MISC_USEREVENT;
event.info = info;
+ event.data = &mode;
fb_notifier_call_chain(evnt, &event);
}
}
return ret;
}
-static int
-fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
{
- int fbidx = iminor(inode);
- struct fb_info *info = registered_fb[fbidx];
- struct fb_ops *fb = info->fbops;
+ struct fb_ops *fb;
struct fb_var_screeninfo var;
struct fb_fix_screeninfo fix;
struct fb_con2fbmap con2fb;
+ struct fb_cmap cmap_from;
struct fb_cmap_user cmap;
struct fb_event event;
void __user *argp = (void __user *)arg;
- int i;
-
- if (!fb)
- return -ENODEV;
+ long ret = 0;
+
switch (cmd) {
case FBIOGET_VSCREENINFO:
- return copy_to_user(argp, &info->var,
- sizeof(var)) ? -EFAULT : 0;
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ var = info->var;
+ unlock_fb_info(info);
+
+ ret = copy_to_user(argp, &var, sizeof(var)) ? -EFAULT : 0;
+ break;
case FBIOPUT_VSCREENINFO:
if (copy_from_user(&var, argp, sizeof(var)))
return -EFAULT;
+ if (!lock_fb_info(info))
+ return -ENODEV;
acquire_console_sem();
info->flags |= FBINFO_MISC_USEREVENT;
- i = fb_set_var(info, &var);
+ ret = fb_set_var(info, &var);
info->flags &= ~FBINFO_MISC_USEREVENT;
release_console_sem();
- if (i) return i;
- if (copy_to_user(argp, &var, sizeof(var)))
- return -EFAULT;
- return 0;
+ unlock_fb_info(info);
+ if (!ret && copy_to_user(argp, &var, sizeof(var)))
+ ret = -EFAULT;
+ break;
case FBIOGET_FSCREENINFO:
- return copy_to_user(argp, &info->fix,
- sizeof(fix)) ? -EFAULT : 0;
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ fix = info->fix;
+ unlock_fb_info(info);
+
+ ret = copy_to_user(argp, &fix, sizeof(fix)) ? -EFAULT : 0;
+ break;
case FBIOPUTCMAP:
if (copy_from_user(&cmap, argp, sizeof(cmap)))
return -EFAULT;
- return (fb_set_user_cmap(&cmap, info));
+ ret = fb_set_user_cmap(&cmap, info);
+ break;
case FBIOGETCMAP:
if (copy_from_user(&cmap, argp, sizeof(cmap)))
return -EFAULT;
- return fb_cmap_to_user(&info->cmap, &cmap);
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ cmap_from = info->cmap;
+ unlock_fb_info(info);
+ ret = fb_cmap_to_user(&cmap_from, &cmap);
+ break;
case FBIOPAN_DISPLAY:
if (copy_from_user(&var, argp, sizeof(var)))
return -EFAULT;
+ if (!lock_fb_info(info))
+ return -ENODEV;
acquire_console_sem();
- i = fb_pan_display(info, &var);
+ ret = fb_pan_display(info, &var);
release_console_sem();
- if (i)
- return i;
- if (copy_to_user(argp, &var, sizeof(var)))
+ unlock_fb_info(info);
+ if (ret == 0 && copy_to_user(argp, &var, sizeof(var)))
return -EFAULT;
- return 0;
+ break;
case FBIO_CURSOR:
- return -EINVAL;
+ ret = -EINVAL;
+ break;
case FBIOGET_CON2FBMAP:
if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
return -EFAULT;
if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
- return -EINVAL;
+ return -EINVAL;
con2fb.framebuffer = -1;
- event.info = info;
event.data = &con2fb;
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ event.info = info;
fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event);
- return copy_to_user(argp, &con2fb,
- sizeof(con2fb)) ? -EFAULT : 0;
+ unlock_fb_info(info);
+ ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
+ break;
case FBIOPUT_CON2FBMAP:
if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
- return - EFAULT;
+ return -EFAULT;
if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
- return -EINVAL;
+ return -EINVAL;
if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX)
- return -EINVAL;
-#ifdef CONFIG_KMOD
- if (!registered_fb[con2fb.framebuffer])
- try_to_load(con2fb.framebuffer);
-#endif /* CONFIG_KMOD */
+ return -EINVAL;
if (!registered_fb[con2fb.framebuffer])
- return -EINVAL;
- event.info = info;
+ request_module("fb%d", con2fb.framebuffer);
+ if (!registered_fb[con2fb.framebuffer]) {
+ ret = -EINVAL;
+ break;
+ }
event.data = &con2fb;
- return fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP,
- &event);
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ event.info = info;
+ ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event);
+ unlock_fb_info(info);
+ break;
case FBIOBLANK:
+ if (!lock_fb_info(info))
+ return -ENODEV;
acquire_console_sem();
info->flags |= FBINFO_MISC_USEREVENT;
- i = fb_blank(info, arg);
+ ret = fb_blank(info, arg);
info->flags &= ~FBINFO_MISC_USEREVENT;
release_console_sem();
- return i;
+ unlock_fb_info(info);
+ break;
default:
- if (fb->fb_ioctl == NULL)
- return -EINVAL;
- return fb->fb_ioctl(info, cmd, arg);
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ fb = info->fbops;
+ if (fb->fb_ioctl)
+ ret = fb->fb_ioctl(info, cmd, arg);
+ else
+ ret = -ENOTTY;
+ unlock_fb_info(info);
}
+ return ret;
+}
+
+static long fb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ int fbidx = iminor(inode);
+ struct fb_info *info = registered_fb[fbidx];
+
+ return do_fb_ioctl(info, cmd, arg);
}
#ifdef CONFIG_COMPAT
compat_caddr_t transp;
};
-static int fb_getput_cmap(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static int fb_getput_cmap(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
{
struct fb_cmap_user __user *cmap;
struct fb_cmap32 __user *cmap32;
put_user(compat_ptr(data), &cmap->transp))
return -EFAULT;
- err = fb_ioctl(inode, file, cmd, (unsigned long) cmap);
+ err = do_fb_ioctl(info, cmd, (unsigned long) cmap);
if (!err) {
if (copy_in_user(&cmap32->start,
return err;
}
-static int fb_get_fscreeninfo(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
{
mm_segment_t old_fs;
struct fb_fix_screeninfo fix;
old_fs = get_fs();
set_fs(KERNEL_DS);
- err = fb_ioctl(inode, file, cmd, (unsigned long) &fix);
+ err = do_fb_ioctl(info, cmd, (unsigned long) &fix);
set_fs(old_fs);
if (!err)
return err;
}
-static long
-fb_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+static long fb_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
struct inode *inode = file->f_path.dentry->d_inode;
int fbidx = iminor(inode);
struct fb_ops *fb = info->fbops;
long ret = -ENOIOCTLCMD;
- lock_kernel();
switch(cmd) {
case FBIOGET_VSCREENINFO:
case FBIOPUT_VSCREENINFO:
case FBIOPUT_CON2FBMAP:
arg = (unsigned long) compat_ptr(arg);
case FBIOBLANK:
- ret = fb_ioctl(inode, file, cmd, arg);
+ ret = do_fb_ioctl(info, cmd, arg);
break;
case FBIOGET_FSCREENINFO:
- ret = fb_get_fscreeninfo(inode, file, cmd, arg);
+ ret = fb_get_fscreeninfo(info, cmd, arg);
break;
case FBIOGETCMAP:
case FBIOPUTCMAP:
- ret = fb_getput_cmap(inode, file, cmd, arg);
+ ret = fb_getput_cmap(info, cmd, arg);
break;
default:
ret = fb->fb_compat_ioctl(info, cmd, arg);
break;
}
- unlock_kernel();
return ret;
}
#endif
static int
fb_mmap(struct file *file, struct vm_area_struct * vma)
+__acquires(&info->lock)
+__releases(&info->lock)
{
int fbidx = iminor(file->f_path.dentry->d_inode);
struct fb_info *info = registered_fb[fbidx];
return -ENODEV;
if (fb->fb_mmap) {
int res;
- lock_kernel();
+ mutex_lock(&info->lock);
res = fb->fb_mmap(info, vma);
- unlock_kernel();
+ mutex_unlock(&info->lock);
return res;
}
- lock_kernel();
+ mutex_lock(&info->lock);
/* frame buffer memory */
start = info->fix.smem_start;
/* memory mapped io */
off -= len;
if (info->var.accel_flags) {
- unlock_kernel();
+ mutex_unlock(&info->lock);
return -EINVAL;
}
start = info->fix.mmio_start;
len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len);
}
- unlock_kernel();
+ mutex_unlock(&info->lock);
start &= PAGE_MASK;
if ((vma->vm_end - vma->vm_start + off) > len)
return -EINVAL;
static int
fb_open(struct inode *inode, struct file *file)
+__acquires(&info->lock)
+__releases(&info->lock)
{
int fbidx = iminor(inode);
struct fb_info *info;
if (fbidx >= FB_MAX)
return -ENODEV;
- lock_kernel();
-#ifdef CONFIG_KMOD
- if (!(info = registered_fb[fbidx]))
- try_to_load(fbidx);
-#endif /* CONFIG_KMOD */
- if (!(info = registered_fb[fbidx])) {
- res = -ENODEV;
- goto out;
- }
+ info = registered_fb[fbidx];
+ if (!info)
+ request_module("fb%d", fbidx);
+ info = registered_fb[fbidx];
+ if (!info)
+ return -ENODEV;
+ mutex_lock(&info->lock);
if (!try_module_get(info->fbops->owner)) {
res = -ENODEV;
goto out;
if (res)
module_put(info->fbops->owner);
}
+#ifdef CONFIG_FB_DEFERRED_IO
+ if (info->fbdefio)
+ fb_deferred_io_open(info, inode, file);
+#endif
out:
- unlock_kernel();
+ mutex_unlock(&info->lock);
return res;
}
static int
fb_release(struct inode *inode, struct file *file)
+__acquires(&info->lock)
+__releases(&info->lock)
{
struct fb_info * const info = file->private_data;
- lock_kernel();
+ mutex_lock(&info->lock);
if (info->fbops->fb_release)
info->fbops->fb_release(info,1);
module_put(info->fbops->owner);
- unlock_kernel();
+ mutex_unlock(&info->lock);
return 0;
}
.owner = THIS_MODULE,
.read = fb_read,
.write = fb_write,
- .ioctl = fb_ioctl,
+ .unlocked_ioctl = fb_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = fb_compat_ioctl,
#endif
if (!registered_fb[i])
break;
fb_info->node = i;
+ mutex_init(&fb_info->lock);
fb_info->dev = device_create(fb_class, fb_info->device,
- MKDEV(FB_MAJOR, i), "fb%d", i);
+ MKDEV(FB_MAJOR, i), NULL, "fb%d", i);
if (IS_ERR(fb_info->dev)) {
/* Not fatal */
printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
registered_fb[i] = fb_info;
event.info = fb_info;
+ if (!lock_fb_info(fb_info))
+ return -ENODEV;
fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event);
+ unlock_fb_info(fb_info);
return 0;
}
goto done;
}
+
+ if (!lock_fb_info(fb_info))
+ return -ENODEV;
event.info = fb_info;
ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event);
+ unlock_fb_info(fb_info);
if (ret) {
ret = -EINVAL;
{
struct fb_event event;
+ if (!lock_fb_info(info))
+ return;
event.info = info;
if (state) {
fb_notifier_call_chain(FB_EVENT_SUSPEND, &event);
info->state = FBINFO_STATE_RUNNING;
fb_notifier_call_chain(FB_EVENT_RESUME, &event);
}
+ unlock_fb_info(info);
}
/**
err = 1;
if (!list_empty(&info->modelist)) {
+ if (!lock_fb_info(info))
+ return -ENODEV;
event.info = info;
err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event);
+ unlock_fb_info(info);
}
return err;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff