Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, cpufeature: Remove stray %s, add -w to mkcapflags.pl
  x86, cpufeature: Catch duplicate CPU feature strings
  x86, cpufeature: Rename X86_FEATURE_DTS to X86_FEATURE_DTHERM
  x86: Fix kernel-doc warnings
  x86, compat: Use test_thread_flag(TIF_IA32) in compat signal delivery

6 files changed, 27 insertions, 14 deletions

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index daeca56211e3..673ac9b63d6b 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -38,7 +38,7 @@
 int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
 {
         int err = 0;
-        bool ia32 = is_ia32_task();
+        bool ia32 = test_thread_flag(TIF_IA32);
 
         if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
                 return -EFAULT;
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 340ee49961a6..f91e80f4f180 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -176,7 +176,7 @@
 #define X86_FEATURE_XSAVEOPT    (7*32+ 4) /* Optimized Xsave */
 #define X86_FEATURE_PLN         (7*32+ 5) /* Intel Power Limit Notification */
 #define X86_FEATURE_PTS         (7*32+ 6) /* Intel Package Thermal Status */
-#define X86_FEATURE_DTS         (7*32+ 7) /* Digital Thermal Sensor */
+#define X86_FEATURE_DTHERM      (7*32+ 7) /* Digital Thermal Sensor */
 #define X86_FEATURE_HW_PSTATE   (7*32+ 8) /* AMD HW-PState */
 
 /* Virtualization flags: Linux defined, word 8 */
diff --git a/arch/x86/kernel/cpu/mkcapflags.pl b/arch/x86/kernel/cpu/mkcapflags.pl
index dfea390e1608..c7b3fe2d72e0 100644
--- a/arch/x86/kernel/cpu/mkcapflags.pl
+++ b/arch/x86/kernel/cpu/mkcapflags.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/perl -w
 #
 # Generate the x86_cap_flags[] array from include/asm-x86/cpufeature.h
 #
@@ -11,22 +11,35 @@ open(OUT, "> $out\0") or die "$0: cannot create: $out: $!\n";
 print OUT "#include <asm/cpufeature.h>\n\n";
 print OUT "const char * const x86_cap_flags[NCAPINTS*32] = {\n";
 
+%features = ();
+$err = 0;
+
 while (defined($line = <IN>)) {
         if ($line =~ /^\s*\#\s*define\s+(X86_FEATURE_(\S+))\s+(.*)$/) {
                 $macro = $1;
-                $feature = $2;
+                $feature = "\L$2";
                 $tail = $3;
                 if ($tail =~ /\/\*\s*\"([^"]*)\".*\*\//) {
-                        $feature = $1;
+                        $feature = "\L$1";
                 }
 
-                if ($feature ne '') {
-                        printf OUT "\t%-32s = \"%s\",\n",
-                                "[$macro]", "\L$feature";
+                next if ($feature eq '');
+
+                if ($features{$feature}++) {
+                        print STDERR "$in: duplicate feature name: $feature\n";
+                        $err++;
                 }
+                printf OUT "\t%-32s = \"%s\",\n", "[$macro]", $feature;
         }
 }
 print OUT "};\n";
 
 close(IN);
 close(OUT);
+
+if ($err) {
+        unlink($out);
+        exit(1);
+}
+
+exit(0);
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
index addf9e82a7f2..ee8e9abc859f 100644
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
@@ -31,7 +31,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
         const struct cpuid_bit *cb;
 
         static const struct cpuid_bit __cpuinitconst cpuid_bits[] = {
-                { X86_FEATURE_DTS,              CR_EAX, 0, 0x00000006, 0 },
+                { X86_FEATURE_DTHERM,           CR_EAX, 0, 0x00000006, 0 },
                 { X86_FEATURE_IDA,              CR_EAX, 1, 0x00000006, 0 },
                 { X86_FEATURE_ARAT,             CR_EAX, 2, 0x00000006, 0 },
                 { X86_FEATURE_PLN,              CR_EAX, 4, 0x00000006, 0 },
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 8bfb6146f753..3f61904365cf 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -444,12 +444,12 @@ void kgdb_roundup_cpus(unsigned long flags)
 
 /**
  *      kgdb_arch_handle_exception - Handle architecture specific GDB packets.
- *      @vector: The error vector of the exception that happened.
+ *      @e_vector: The error vector of the exception that happened.
  *      @signo: The signal number of the exception that happened.
  *      @err_code: The error code of the exception that happened.
- *      @remcom_in_buffer: The buffer of the packet we have read.
- *      @remcom_out_buffer: The buffer of %BUFMAX bytes to write a packet into.
- *      @regs: The &struct pt_regs of the current process.
+ *      @remcomInBuffer: The buffer of the packet we have read.
+ *      @remcomOutBuffer: The buffer of %BUFMAX bytes to write a packet into.
+ *      @linux_regs: The &struct pt_regs of the current process.
  *
  *      This function MUST handle the 'c' and 's' command packets,
  *      as well packets to set / remove a hardware breakpoint, if used.
diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c
index 459b58a8a15c..25b7ae8d058a 100644
--- a/arch/x86/lib/csum-wrappers_64.c
+++ b/arch/x86/lib/csum-wrappers_64.c
@@ -115,7 +115,7 @@ EXPORT_SYMBOL(csum_partial_copy_to_user);
  * @src: source address
  * @dst: destination address
  * @len: number of bytes to be copied.
- * @isum: initial sum that is added into the result (32bit unfolded)
+ * @sum: initial sum that is added into the result (32bit unfolded)
  *
  * Returns an 32bit unfolded checksum of the buffer.
  */