-stable review patch. If anyone has any objections, please let us know.
---------------------
From: Antonino A Daplas <[email protected]>
The pseudo_palette has room for 16 entries only, but in truecolor mode, it
attempts to write 256.
Signed-off-by: Antonino Daplas <[email protected]>
Acked-by: Tero Roponen <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
This fixes the following regression/bug reported as follows:
Subject : tty-related oops in latest kernel(s)
References : http://lkml.org/lkml/2007/5/27/104
Submitter : Tero Roponen <[email protected]>
Status : problem is being debugged
According to Tero, this is also reproducible with 2.6.21.3.
(Resending, wrong email address for [email protected])
Tony
drivers/video/neofb.c | 30 ++++++++++++++++--------------
1 file changed, 16 insertions(+), 14 deletions(-)
--- linux-2.6.21.4.orig/drivers/video/neofb.c
+++ linux-2.6.21.4/drivers/video/neofb.c
@@ -1285,34 +1285,36 @@ static int neofb_setcolreg(u_int regno,
if (regno >= fb->cmap.len || regno > 255)
return -EINVAL;
- switch (fb->var.bits_per_pixel) {
- case 8:
+ if (fb->var.bits_per_pixel <= 8) {
outb(regno, 0x3c8);
outb(red >> 10, 0x3c9);
outb(green >> 10, 0x3c9);
outb(blue >> 10, 0x3c9);
- break;
- case 16:
- ((u32 *) fb->pseudo_palette)[regno] =
+ } else if (regno < 16) {
+ switch (fb->var.bits_per_pixel) {
+ case 16:
+ ((u32 *) fb->pseudo_palette)[regno] =
((red & 0xf800)) | ((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
- break;
- case 24:
- ((u32 *) fb->pseudo_palette)[regno] =
+ break;
+ case 24:
+ ((u32 *) fb->pseudo_palette)[regno] =
((red & 0xff00) << 8) | ((green & 0xff00)) |
((blue & 0xff00) >> 8);
- break;
+ break;
#ifdef NO_32BIT_SUPPORT_YET
- case 32:
- ((u32 *) fb->pseudo_palette)[regno] =
+ case 32:
+ ((u32 *) fb->pseudo_palette)[regno] =
((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
((green & 0xff00)) | ((blue & 0xff00) >> 8);
- break;
+ break;
#endif
- default:
- return 1;
+ default:
+ return 1;
+ }
}
+
return 0;
}
--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
