panic: Allow warnings to set different taint flags

WARN() is used in some places to report firmware or hardware bugs that
are then worked-around.  These bugs do not affect the stability of the
kernel and should not set the flag for TAINT_WARN.  To allow for this,
add WARN_TAINT() and WARN_TAINT_ONCE() macros that take a taint number
as argument.

Architectures that implement warnings using trap instructions instead
of calls to warn_slowpath_*() now implement __WARN_TAINT(taint)
instead of __WARN().

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Helge Deller <deller@gmx.de>
Tested-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/parisc/include/asm/bug.h b/arch/parisc/include/asm/bug.h
index 75e46c557a16..72cfdb0cfdd1 100644
--- a/arch/parisc/include/asm/bug.h
+++ b/arch/parisc/include/asm/bug.h
@@ -44,7 +44,7 @@
 #endif
 
 #ifdef CONFIG_DEBUG_BUGVERBOSE
-#define __WARN()                                                        \
+#define __WARN_TAINT(taint)                                             \
         do {                                                            \
                 asm volatile("\n"                                       \
                              "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
@@ -54,11 +54,11 @@
                              "\t.org 2b+%c3\n"                          \
                              "\t.popsection"                            \
                              : : "i" (__FILE__), "i" (__LINE__),        \
-                             "i" (BUGFLAG_WARNING),                     \
+                             "i" (BUGFLAG_TAINT(taint)),                \
                              "i" (sizeof(struct bug_entry)) );          \
         } while(0)
 #else
-#define __WARN()                                                        \
+#define __WARN_TAINT(taint)                                             \
         do {                                                            \
                 asm volatile("\n"                                       \
                              "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
@@ -67,7 +67,7 @@
                              "\t.short %c0\n"                           \
                              "\t.org 2b+%c1\n"                          \
                              "\t.popsection"                            \
-                             : : "i" (BUGFLAG_WARNING),                 \
+                             : : "i" (BUGFLAG_TAINT(taint)),            \
                              "i" (sizeof(struct bug_entry)) );          \
         } while(0)
 #endif