---

yaml --- r: 87137 b: refs/heads/master c: f5dbb55 h: refs/heads/master i: 87135: 9bf33bc v: v3
git-mirror · Mar 11, 2008 · 589c107 · 589c107
1 parent 0fd4c12
commit 589c107
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: effe008d276f52674d5352deefb68ec409a5ef9b
+refs/heads/master: f5dbb55b995b77d396fe2204495a0af3e24d28c2
diff --git a/trunk/arch/x86/pci/pcbios.c b/trunk/arch/x86/pci/pcbios.c
@@ -198,6 +198,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 			  "b" (bx),
 			  "D" ((long)reg),
 			  "S" (&pci_indirect));
+		/*
+		 * Zero-extend the result beyond 8 bits, do not trust the
+		 * BIOS having done it:
+		 */
+		*value &= 0xff;
 		break;
 	case 2:
 		__asm__("lcall *(%%esi); cld\n\t"
@@ -210,6 +215,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 			  "b" (bx),
 			  "D" ((long)reg),
 			  "S" (&pci_indirect));
+		/*
+		 * Zero-extend the result beyond 16 bits, do not trust the
+		 * BIOS having done it:
+		 */
+		*value &= 0xffff;
 		break;
 	case 4:
 		__asm__("lcall *(%%esi); cld\n\t"