Remove deadlock potential in md_open

[safe/jmp/linux-2.6] / drivers / video / vfb.c

diff --git a/drivers/video/vfb.c b/drivers/video/vfb.c
index cc919ae..050d432 100644 (file)
--- a/drivers/video/vfb.c
+++ b/drivers/video/vfb.c
@@ -318,13 +318,16 @@ static int vfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
         *   {hardwarespecific} contains width of RAMDAC
         *   cmap[X] is programmed to (X << red.offset) | (X << green.offset) | (X << blue.offset)
         *   RAMDAC[X] is programmed to (red, green, blue)
-        * 
+        *
         * Pseudocolor:
-        *    uses offset = 0 && length = RAMDAC register width.
-        *    var->{color}.offset is 0
-        *    var->{color}.length contains widht of DAC
+        *    var->{color}.offset is 0 unless the palette index takes less than
+        *                        bits_per_pixel bits and is stored in the upper
+        *                        bits of the pixel value
+        *    var->{color}.length is set so that 1 << length is the number of available
+        *                        palette entries
         *    cmap is not used
         *    RAMDAC[X] is programmed to (red, green, blue)
+        *
         * Truecolor:
         *    does not use DAC. Usually 3 are present.
         *    var->{color}.offset contains start of bitfield