diff options
Diffstat (limited to 'drivers/video/i810/i810_main.c')
| -rw-r--r-- | drivers/video/i810/i810_main.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c index b55a12d95eb2..ab1b8fe34d6d 100644 --- a/drivers/video/i810/i810_main.c +++ b/drivers/video/i810/i810_main.c @@ -1049,7 +1049,7 @@ static int i810_check_params(struct fb_var_screeninfo *var, mode_valid = 1; if (!mode_valid && info->monspecs.modedb_len) { - struct fb_videomode *mode; + const struct fb_videomode *mode; mode = fb_find_best_mode(var, &info->modelist); if (mode) { @@ -1235,9 +1235,9 @@ static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue, static int i810fb_open(struct fb_info *info, int user) { struct i810fb_par *par = info->par; - u32 count = atomic_read(&par->use_count); - - if (count == 0) { + + mutex_lock(&par->open_lock); + if (par->use_count == 0) { memset(&par->state, 0, sizeof(struct vgastate)); par->state.flags = VGA_SAVE_CMAP; par->state.vgabase = par->mmio_start_virtual; @@ -1246,7 +1246,8 @@ static int i810fb_open(struct fb_info *info, int user) i810_save_vga_state(par); } - atomic_inc(&par->use_count); + par->use_count++; + mutex_unlock(&par->open_lock); return 0; } @@ -1254,18 +1255,20 @@ static int i810fb_open(struct fb_info *info, int user) static int i810fb_release(struct fb_info *info, int user) { struct i810fb_par *par = info->par; - u32 count; - - count = atomic_read(&par->use_count); - if (count == 0) + + mutex_lock(&par->open_lock); + if (par->use_count == 0) { + mutex_unlock(&par->open_lock); return -EINVAL; + } - if (count == 1) { + if (par->use_count == 1) { i810_restore_vga_state(par); restore_vga(&par->state); } - atomic_dec(&par->use_count); + par->use_count--; + mutex_unlock(&par->open_lock); return 0; } @@ -1752,6 +1755,8 @@ static void __devinit i810_init_monspecs(struct fb_info *info) static void __devinit i810_init_defaults(struct i810fb_par *par, struct fb_info *info) { + mutex_init(&par->open_lock); + if (voffset) v_offset_default = voffset; else if (par->aperture.size > 32 * 1024 * 1024) @@ -1919,7 +1924,7 @@ static void __devinit i810fb_find_init_mode(struct fb_info *info) fb_videomode_to_modelist(specs->modedb, specs->modedb_len, &info->modelist); if (specs->modedb != NULL) { - struct fb_videomode *m; + const struct fb_videomode *m; if (xres && yres) { if ((m = fb_find_best_mode(&var, &info->modelist))) { @@ -2016,11 +2021,10 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev, par = info->par; par->dev = dev; - if (!(info->pixmap.addr = kmalloc(8*1024, GFP_KERNEL))) { + if (!(info->pixmap.addr = kzalloc(8*1024, GFP_KERNEL))) { i810fb_release_resource(info, par); return -ENOMEM; } - memset(info->pixmap.addr, 0, 8*1024); info->pixmap.size = 8*1024; info->pixmap.buf_align = 8; info->pixmap.access_align = 32; |