From: Antonino A. Daplas Date: Mon, 19 Dec 2005 07:11:49 +0000 (+0800) Subject: [PATCH] intelfb: Fix oops when changing video mode X-Git-Tag: v2.6.15-rc7~16^2~10 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33c37c06f8066342764bd1568c9f3524efe889a5;p=linux-2.6 [PATCH] intelfb: Fix oops when changing video mode Reported by: janis huang (Bugzilla Bug 5747) Fix on oops in intelfb. Not sure what's happening, looks like dinfo->name pointer is invalidated after initialization. Remove intelfb_get_fix, it's not needed and move the majority of the code to the initialization routine. Signed-off-by: Antonino Daplas Signed-off-by: Linus Torvalds --- diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c index ac8d661709..0090544842 100644 --- a/drivers/video/intelfb/intelfbdrv.c +++ b/drivers/video/intelfb/intelfbdrv.c @@ -135,9 +135,6 @@ static void __devinit get_initial_mode(struct intelfb_info *dinfo); static void update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var); -static int intelfb_get_fix(struct fb_fix_screeninfo *fix, - struct fb_info *info); - static int intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); static int intelfb_set_par(struct fb_info *info); @@ -1096,7 +1093,17 @@ intelfb_set_fbinfo(struct intelfb_info *dinfo) return 1; info->pixmap.scan_align = 1; - + strcpy(info->fix.id, dinfo->name); + info->fix.smem_start = dinfo->fb.physical; + info->fix.smem_len = dinfo->fb.size; + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.type_aux = 0; + info->fix.xpanstep = 8; + info->fix.ypanstep = 1; + info->fix.ywrapstep = 0; + info->fix.mmio_start = dinfo->mmio_base_phys; + info->fix.mmio_len = INTEL_REG_SIZE; + info->fix.accel = FB_ACCEL_I830; update_dinfo(dinfo, &info->var); return 0; @@ -1114,7 +1121,8 @@ update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var) dinfo->yres = var->xres; dinfo->pixclock = var->pixclock; - intelfb_get_fix(&dinfo->info->fix, dinfo->info); + dinfo->info->fix.visual = dinfo->visual; + dinfo->info->fix.line_length = dinfo->pitch; switch (dinfo->bpp) { case 8: @@ -1144,30 +1152,6 @@ update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var) /* fbops functions */ -static int -intelfb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info) -{ - struct intelfb_info *dinfo = GET_DINFO(info); - - DBG_MSG("intelfb_get_fix\n"); - - memset(fix, 0, sizeof(*fix)); - strcpy(fix->id, dinfo->name); - fix->smem_start = dinfo->fb.physical; - fix->smem_len = dinfo->fb.size; - fix->type = FB_TYPE_PACKED_PIXELS; - fix->type_aux = 0; - fix->visual = dinfo->visual; - fix->xpanstep = 8; - fix->ypanstep = 1; - fix->ywrapstep = 0; - fix->line_length = dinfo->pitch; - fix->mmio_start = dinfo->mmio_base_phys; - fix->mmio_len = INTEL_REG_SIZE; - fix->accel = FB_ACCEL_I830; - return 0; -} - /*************************************************************** * fbdev interface * ***************************************************************/