forked from Minki/linux
macfb: Do not overflow fb_fix_screeninfo.id
Don't overflow the 16-character fb_fix_screeninfo id string (fixes some console erasing and blanking artifacts). Have the ID default to "Unknown" on machines with no built-in video and no nubus devices. Check for fb_alloc_cmap failure. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Finn Thain
Geert Uytterhoeven
parent
061e41fdb5
commit
89c223a616
@ -164,7 +164,6 @@ static struct fb_var_screeninfo macfb_defined = {
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};
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static struct fb_fix_screeninfo macfb_fix = {
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.id = "Macintosh ",
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.type = FB_TYPE_PACKED_PIXELS,
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.accel = FB_ACCEL_NONE,
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};
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@ -760,22 +759,22 @@ static int __init macfb_init(void)
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switch(ndev->dr_hw) {
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case NUBUS_DRHW_APPLE_MDC:
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strcat( macfb_fix.id, "Display Card" );
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strcpy(macfb_fix.id, "Mac Disp. Card");
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macfb_setpalette = mdc_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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break;
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case NUBUS_DRHW_APPLE_TFB:
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strcat( macfb_fix.id, "Toby" );
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strcpy(macfb_fix.id, "Toby");
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macfb_setpalette = toby_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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break;
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case NUBUS_DRHW_APPLE_JET:
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strcat( macfb_fix.id, "Jet");
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strcpy(macfb_fix.id, "Jet");
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macfb_setpalette = jet_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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break;
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default:
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strcat( macfb_fix.id, "Generic NuBus" );
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strcpy(macfb_fix.id, "Generic NuBus");
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break;
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}
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}
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@ -786,21 +785,11 @@ static int __init macfb_init(void)
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if (!video_is_nubus)
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switch( mac_bi_data.id )
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{
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/* These don't have onboard video. Eventually, we may
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be able to write separate framebuffer drivers for
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them (tobyfb.c, hiresfb.c, etc, etc) */
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case MAC_MODEL_II:
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case MAC_MODEL_IIX:
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case MAC_MODEL_IICX:
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case MAC_MODEL_IIFX:
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strcat( macfb_fix.id, "Generic NuBus" );
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break;
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/* Valkyrie Quadras */
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case MAC_MODEL_Q630:
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/* I'm not sure about this one */
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case MAC_MODEL_P588:
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strcat( macfb_fix.id, "Valkyrie built-in" );
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strcpy(macfb_fix.id, "Valkyrie");
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macfb_setpalette = valkyrie_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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valkyrie_cmap_regs = ioremap(DAC_BASE, 0x1000);
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@ -823,7 +812,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_Q700:
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case MAC_MODEL_Q900:
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case MAC_MODEL_Q950:
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strcat( macfb_fix.id, "DAFB built-in" );
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strcpy(macfb_fix.id, "DAFB");
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macfb_setpalette = dafb_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
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@ -831,7 +820,7 @@ static int __init macfb_init(void)
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/* LC II uses the V8 framebuffer */
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case MAC_MODEL_LCII:
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strcat( macfb_fix.id, "V8 built-in" );
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strcpy(macfb_fix.id, "V8");
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macfb_setpalette = v8_brazil_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
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@ -843,7 +832,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_IIVI:
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case MAC_MODEL_IIVX:
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case MAC_MODEL_P600:
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strcat( macfb_fix.id, "Brazil built-in" );
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strcpy(macfb_fix.id, "Brazil");
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macfb_setpalette = v8_brazil_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
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@ -860,7 +849,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_P460:
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macfb_setpalette = v8_brazil_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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strcat( macfb_fix.id, "Sonora built-in" );
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strcpy(macfb_fix.id, "Sonora");
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v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
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break;
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@ -871,7 +860,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_IISI:
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macfb_setpalette = rbv_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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strcat( macfb_fix.id, "RBV built-in" );
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strcpy(macfb_fix.id, "RBV");
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rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
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break;
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@ -880,7 +869,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_C660:
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macfb_setpalette = civic_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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strcat( macfb_fix.id, "Civic built-in" );
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strcpy(macfb_fix.id, "Civic");
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civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
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break;
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@ -901,7 +890,7 @@ static int __init macfb_init(void)
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v8_brazil_cmap_regs =
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ioremap(DAC_BASE, 0x1000);
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}
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strcat( macfb_fix.id, "LC built-in" );
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strcpy(macfb_fix.id, "LC");
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break;
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/* We think this may be like the LC II */
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case MAC_MODEL_CCL:
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@ -911,18 +900,18 @@ static int __init macfb_init(void)
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v8_brazil_cmap_regs =
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ioremap(DAC_BASE, 0x1000);
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}
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strcat( macfb_fix.id, "Color Classic built-in" );
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strcpy(macfb_fix.id, "Color Classic");
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break;
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/* And we *do* mean "weirdos" */
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case MAC_MODEL_TV:
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strcat( macfb_fix.id, "Mac TV built-in" );
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strcpy(macfb_fix.id, "Mac TV");
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break;
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/* These don't have colour, so no need to worry */
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case MAC_MODEL_SE30:
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case MAC_MODEL_CLII:
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strcat( macfb_fix.id, "Monochrome built-in" );
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strcpy(macfb_fix.id, "Monochrome");
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break;
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/* Powerbooks are particularly difficult. Many of
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@ -935,7 +924,7 @@ static int __init macfb_init(void)
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case MAC_MODEL_PB140:
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case MAC_MODEL_PB145:
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case MAC_MODEL_PB170:
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strcat( macfb_fix.id, "DDC built-in" );
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strcpy(macfb_fix.id, "DDC");
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break;
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/* Internal is GSC, External (if present) is ViSC */
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@ -945,13 +934,13 @@ static int __init macfb_init(void)
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case MAC_MODEL_PB180:
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case MAC_MODEL_PB210:
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case MAC_MODEL_PB230:
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strcat( macfb_fix.id, "GSC built-in" );
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strcpy(macfb_fix.id, "GSC");
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break;
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/* Internal is TIM, External is ViSC */
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case MAC_MODEL_PB165C:
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case MAC_MODEL_PB180C:
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strcat( macfb_fix.id, "TIM built-in" );
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strcpy(macfb_fix.id, "TIM");
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break;
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/* Internal is CSC, External is Keystone+Ariel. */
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@ -963,12 +952,12 @@ static int __init macfb_init(void)
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case MAC_MODEL_PB280C:
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macfb_setpalette = csc_setpalette;
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macfb_defined.activate = FB_ACTIVATE_NOW;
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strcat( macfb_fix.id, "CSC built-in" );
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strcpy(macfb_fix.id, "CSC");
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csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
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break;
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default:
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strcat( macfb_fix.id, "Unknown/Unsupported built-in" );
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strcpy(macfb_fix.id, "Unknown");
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break;
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}
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@ -978,16 +967,23 @@ static int __init macfb_init(void)
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fb_info.pseudo_palette = pseudo_palette;
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fb_info.flags = FBINFO_DEFAULT;
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fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
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err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
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if (err)
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goto fail_unmap;
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err = register_framebuffer(&fb_info);
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if (!err)
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printk("fb%d: %s frame buffer device\n",
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fb_info.node, fb_info.fix.id);
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else {
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iounmap(fb_info.screen_base);
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iounmap_macfb();
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}
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if (err)
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goto fail_dealloc;
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printk("fb%d: %s frame buffer device\n",
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fb_info.node, fb_info.fix.id);
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return 0;
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fail_dealloc:
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fb_dealloc_cmap(&fb_info.cmap);
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fail_unmap:
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iounmap(fb_info.screen_base);
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iounmap_macfb();
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return err;
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}
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