Messages in this thread Patch in this message |  | | Date | Fri, 9 Nov 2001 13:04:33 +0100 (CET) | From | Bakonyi Ferenc <> | Subject | [PATCH] hgafb oopses |
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Hi!
Somebody submitted a patch against 2.4.13 which broke hgafb. That patch called isa_memset() and isa_writeb() with an _already_ mapped address. So that address was mapped twice -> oops.
The patch below is against 2.4.15-pre1. It resolves the ISA address confusion, replaces scr_{read|write} functions with isa_{read|write}, and elimiates a cosmetic compiler warning about suggested parens.
Best regards: Ferenc Bakonyi
--- linux-2.4.15-pre1/drivers/video/hgafb.c Fri Nov 9 12:22:42 2001 +++ linux/drivers/video/hgafb.c Fri Nov 9 12:26:33 2001 @@ -312,10 +312,10 @@ static int __init hga_card_detect(void) { int count=0; - u16 *p, p_save; - u16 *q, q_save; + unsigned char p, p_save; + unsigned char q, q_save;
- hga_vram_base = VGA_MAP_MEM(0xb0000); + hga_vram_base = 0xb0000; hga_vram_len = 0x08000;
if (request_region(0x3b0, 12, "hgafb")) @@ -325,14 +325,14 @@
/* do a memory check */
- p = (u16 *) hga_vram_base; - q = (u16 *) (hga_vram_base + 0x01000); + p = hga_vram_base; + q = hga_vram_base + 0x01000;
- p_save = scr_readw(p); q_save = scr_readw(q); + p_save = isa_readw(p); q_save = isa_readw(q);
- scr_writew(0xaa55, p); if (scr_readw(p) == 0xaa55) count++; - scr_writew(0x55aa, p); if (scr_readw(p) == 0x55aa) count++; - scr_writew(p_save, p); + isa_writew(0xaa55, p); if (isa_readw(p) == 0xaa55) count++; + isa_writew(0x55aa, p); if (isa_readw(p) == 0x55aa) count++; + isa_writew(p_save, p);
if (count != 2) { return 0; @@ -717,7 +717,7 @@ if (!nologo) hga_show_logo(); #endif /* MODULE */
- hga_fix.smem_start = hga_vram_base; + hga_fix.smem_start = VGA_MAP_MEM(hga_vram_base); hga_fix.smem_len = hga_vram_len;
disp.var = hga_default_var; @@ -795,7 +795,7 @@ if (!options || !*options) return 0;
- while (this_opt = strsep(&options, ",")) { + while ((this_opt = strsep(&options, ","))) { if (!strncmp(this_opt, "font:", 5)) strcpy(fb_info.fontname, this_opt+5); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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