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Do not call the VESA BIOS if the current video mode is not one of

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the VESA modes.
This commit is contained in:
Kazutaka YOKOTA 1999-09-02 08:08:49 +00:00
parent 5772c0559a
commit a847d1e2d7
1 changed files with 6 additions and 0 deletions
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6
sys/i386/isa/vesa.c
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@ -1397,9 +1397,13 @@ vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
switch (cmd) {
case FBIO_SETWINORG: /* set frame buffer window origin */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
return (vesa_set_origin(adp, *(off_t *)arg) ? ENODEV : 0);
case FBIO_SETDISPSTART: /* set display start address */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
if (vesa_bios_set_start(((video_display_start_t *)arg)->x,
((video_display_start_t *)arg)->y))
return ENODEV;
@ -1408,6 +1412,8 @@ vesa_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
return 0;
case FBIO_SETLINEWIDTH: /* set line length in pixel */
if (!VESA_MODE(adp->va_mode))
return (*prevvidsw->ioctl)(adp, cmd, arg);
if (vesa_bios_set_line_length(*(u_int *)arg, &bytes, NULL))
return ENODEV;
adp->va_line_width = bytes;