From: Mikulas Patocka Date: Thu, 23 Jan 2014 19:42:43 +0000 (-0500) Subject: tgafb: fix mode setting with fbset X-Git-Tag: v3.15-rc1~63^2~34 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=624966589041deb32a2626ee2e176e8274581101;p=pandora-kernel.git tgafb: fix mode setting with fbset Mode setting in the TGA driver is broken for these reasons: - info->fix.line_length is set just once in tgafb_init_fix function. If we change videomode, info->fix.line_length is not recalculated - so the video mode is changed but the screen is corrupted because of wrong info->fix.line_length. - info->fix.smem_len is set in tgafb_init_fix to the size of the default video mode (640x480). If we set a higher resolution, info->fix.smem_len is smaller than the current screen size, preventing the userspace program from mapping the framebuffer. This patch fixes it: - info->fix.line_length initialization is moved to tgafb_set_par so that it is recalculated with each mode change. - info->fix.smem_len is set to a fixed value representing the real amount of video ram (the values are taken from xfree86 driver). - add a check to tgafb_check_var to prevent us from setting a videomode that doesn't fit into videoram. - in tgafb_register, tgafb_init_fix is moved upwards, to be called before fb_find_mode (because fb_find_mode already needs the videoram size set in tgafb_init_fix). Signed-off-by: Mikulas Patocka Cc: stable@vga.kernel.org Signed-off-by: Tomi Valkeinen --- Reading git-diff-tree failed