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| author | Antonino A. Daplas <adaplas@gmail.com> | 2005-09-12 09:13:32 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-11 20:43:47 -0700 |
| commit | 883f64510718e7df9abbfeec4748d92745d8cc3e (patch) | |
| tree | 49cba3bb78cbf5329029948593eee9610794f669 /drivers/video/i810/i810_main.c | |
| parent | 81d4903d2d17a9f33ece2666185a8b51e6935ae0 (diff) | |
| download | linux-883f64510718e7df9abbfeec4748d92745d8cc3e.tar.gz linux-883f64510718e7df9abbfeec4748d92745d8cc3e.tar.bz2 linux-883f64510718e7df9abbfeec4748d92745d8cc3e.zip | |
[PATCH] i810fb: Fix oops if CONFIG_FB_I810_I2C is set to no
Reported by: Manuel Lauss <mano@roarinelk.homelinux.net>
compiled with CONFIG_FB_I810_I2C = n and CONFIG_FB_I810 = y
it oopses at boot in file drivers/video/i810/i810_main.c:1884
...
Unable to handle kernel NULL pointer dereference at virtual address 00000054
printing eip:
c02543c0
*pde = 00000000
Oops: 0000 [#1]
last sysfs file:
Modules linked in:
CPU: 0
EIP: 0060:[<c02543c0>] Not tainted VLI
EFLAGS: 00010286 (2.6.13-mm2)
EIP is at i810fb_find_init_mode+0x53/0x93
eax: c113ddd4 ebx: c1194000 ecx: c04be2dd edx: c1194000
esi: c1194008 edi: c113ddd4 ebp: c1194240 esp: c113ddcc
ds: 007b es: 007b ss: 0068
struct fb_monspecs *specs is initialized to NULL causing the oops.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/i810/i810_main.c')
| -rw-r--r-- | drivers/video/i810/i810_main.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c index 7018ffffcbc4..6f11989f54e3 100644 --- a/drivers/video/i810/i810_main.c +++ b/drivers/video/i810/i810_main.c @@ -950,7 +950,7 @@ static int i810_check_params(struct fb_var_screeninfo *var, struct fb_info *info) { struct i810fb_par *par = (struct i810fb_par *) info->par; - int line_length, vidmem, mode_valid = 0; + int line_length, vidmem, mode_valid = 0, retval = 0; u32 vyres = var->yres_virtual, vxres = var->xres_virtual; /* * Memory limit @@ -1026,10 +1026,11 @@ static int i810_check_params(struct fb_var_screeninfo *var, printk("i810fb: invalid video mode%s\n", default_sync ? "" : ". Specifying " "vsyncN/hsyncN parameters may help"); + retval = -EINVAL; } } - return 0; + return retval; } /** @@ -1830,7 +1831,7 @@ static void __devinit i810fb_find_init_mode(struct fb_info *info) { struct fb_videomode mode; struct fb_var_screeninfo var; - struct fb_monspecs *specs = NULL; + struct fb_monspecs *specs = &info->monspecs; int found = 0; #ifdef CONFIG_FB_I810_I2C int i; @@ -1853,12 +1854,11 @@ static void __devinit i810fb_find_init_mode(struct fb_info *info) if (!err) printk("i810fb_init_pci: DDC probe successful\n"); - fb_edid_to_monspecs(par->edid, &info->monspecs); + fb_edid_to_monspecs(par->edid, specs); - if (info->monspecs.modedb == NULL) + if (specs->modedb == NULL) printk("i810fb_init_pci: Unable to get Mode Database\n"); - specs = &info->monspecs; fb_videomode_to_modelist(specs->modedb, specs->modedb_len, &info->modelist); if (specs->modedb != NULL) { |