Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

[linux-2.6] / arch / x86 / kernel / cpu / bugs.c

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 170d2f5523b2c6e04f4c28aa423077388bb3abce..c9b58a806e852d3d4a2ff96e0f48c0e737cff80f 100644 (file)
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -59,8 +59,12 @@ static void __init check_fpu(void)
                return;
        }
 
-/* trap_init() enabled FXSR and company _before_ testing for FP problems here. */
-       /* Test for the divl bug.. */
+       /*
+        * trap_init() enabled FXSR and company _before_ testing for FP
+        * problems here.
+        *
+        * Test for the divl bug..
+        */
        __asm__("fninit\n\t"
                "fldl %1\n\t"
                "fdivl %2\n\t"
@@ -108,10 +112,15 @@ static void __init check_popad(void)
          "movl $12345678,%%eax; movl $0,%%edi; pusha; popa; movl (%%edx,%%edi),%%ecx "
          : "=&a" (res)
          : "d" (inp)
-         : "ecx", "edi" );
-       /* If this fails, it means that any user program may lock the CPU hard. Too bad. */
-       if (res != 12345678) printk( "Buggy.\n" );
-                       else printk( "OK.\n" );
+         : "ecx", "edi");
+       /*
+        * If this fails, it means that any user program may lock the
+        * CPU hard. Too bad.
+        */
+       if (res != 12345678)
+               printk("Buggy.\n");
+       else
+               printk("OK.\n");
 #endif
 }
 
@@ -122,13 +131,7 @@ static void __init check_popad(void)
  *   (for due to lack of "invlpg" and working WP on a i386)
  * - In order to run on anything without a TSC, we need to be
  *   compiled for a i486.
- * - In order to support the local APIC on a buggy Pentium machine,
- *   we need to be compiled with CONFIG_X86_GOOD_APIC disabled,
- *   which happens implicitly if compiled for a Pentium or lower
- *   (unless an advanced selection of CPU features is used) as an
- *   otherwise config implies a properly working local APIC without
- *   the need to do extra reads from the APIC.
-*/
+ */
 
 static void __init check_config(void)
 {
@@ -137,25 +140,11 @@ static void __init check_config(void)
  * i486+ only features! (WP works in supervisor mode and the
  * new "invlpg" and "bswap" instructions)
  */
-#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_BSWAP)
+#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || \
+       defined(CONFIG_X86_BSWAP)
        if (boot_cpu_data.x86 == 3)
                panic("Kernel requires i486+ for 'invlpg' and other features");
 #endif
-
-/*
- * If we were told we had a good local APIC, check for buggy Pentia,
- * i.e. all B steppings and the C2 stepping of P54C when using their
- * integrated APIC (see 11AP erratum in "Pentium Processor
- * Specification Update").
- */
-#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_GOOD_APIC)
-       if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL
-           && cpu_has_apic
-           && boot_cpu_data.x86 == 5
-           && boot_cpu_data.x86_model == 2
-           && (boot_cpu_data.x86_mask < 6 || boot_cpu_data.x86_mask == 11))
-               panic("Kernel compiled for PMMX+, assumes a local APIC without the read-before-write bug!");
-#endif
 }
 
 
@@ -170,6 +159,7 @@ void __init check_bugs(void)
        check_fpu();
        check_hlt();
        check_popad();
-       init_utsname()->machine[1] = '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
+       init_utsname()->machine[1] =
+               '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
        alternative_instructions();
 }