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fbdev/sis: Remove dependency on screen_info
When built-in, the sis driver tries to detect the current display mode from the global screen_info state. That state is only for architecture and firmware code. Drivers should not use it directly as it's not guaranteed to contain valid information. Remove the mode-detection code from sis. Drivers that want to detect a pre-set mode on probe should read the hardware registers directly. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de>
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29328fb06c
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7452b319bd
1 changed files with 0 additions and 37 deletions
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@ -27,7 +27,6 @@
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/screen_info.h>
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#include <linux/slab.h>
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#include <linux/fb.h>
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#include <linux/selection.h>
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@ -257,36 +256,6 @@ static void sisfb_search_mode(char *name, bool quiet)
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printk(KERN_ERR "sisfb: Invalid mode '%s'\n", nameptr);
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}
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#ifndef MODULE
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static void sisfb_get_vga_mode_from_kernel(void)
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{
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#ifdef CONFIG_X86
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char mymode[32];
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int mydepth = screen_info.lfb_depth;
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if(screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB) return;
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if( (screen_info.lfb_width >= 320) && (screen_info.lfb_width <= 2048) &&
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(screen_info.lfb_height >= 200) && (screen_info.lfb_height <= 1536) &&
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(mydepth >= 8) && (mydepth <= 32) ) {
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if(mydepth == 24) mydepth = 32;
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sprintf(mymode, "%ux%ux%u", screen_info.lfb_width,
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screen_info.lfb_height,
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mydepth);
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printk(KERN_DEBUG
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"sisfb: Using vga mode %s pre-set by kernel as default\n",
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mymode);
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sisfb_search_mode(mymode, true);
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}
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#endif
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return;
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}
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#endif
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static void __init
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sisfb_search_crt2type(const char *name)
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{
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@ -5901,12 +5870,6 @@ static int sisfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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ivideo->subsysvendor = pdev->subsystem_vendor;
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ivideo->subsysdevice = pdev->subsystem_device;
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#ifndef MODULE
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if(sisfb_mode_idx == -1) {
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sisfb_get_vga_mode_from_kernel();
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}
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#endif
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ivideo->chip = chipinfo->chip;
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ivideo->chip_real_id = chipinfo->chip;
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ivideo->sisvga_engine = chipinfo->vgaengine;
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