1 files changed, 29 insertions, 10 deletions

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 7ca29a0a3019..29ff2e4cfb75 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -521,25 +521,25 @@ static char *dynamic_emit_prefix(const struct _ddebug *desc, char *buf)
         int pos_after_tid;
         int pos = 0;
 
-        pos += snprintf(buf + pos, remaining(pos), "%s", KERN_DEBUG);
+        *buf = '\0';
+
         if (desc->flags & _DPRINTK_FLAGS_INCL_TID) {
                 if (in_interrupt())
-                        pos += snprintf(buf + pos, remaining(pos), "%s ",
-                                                "<intr>");
+                        pos += snprintf(buf + pos, remaining(pos), "<intr> ");
                 else
                         pos += snprintf(buf + pos, remaining(pos), "[%d] ",
-                                                task_pid_vnr(current));
+                                        task_pid_vnr(current));
         }
         pos_after_tid = pos;
         if (desc->flags & _DPRINTK_FLAGS_INCL_MODNAME)
                 pos += snprintf(buf + pos, remaining(pos), "%s:",
-                                        desc->modname);
+                                desc->modname);
         if (desc->flags & _DPRINTK_FLAGS_INCL_FUNCNAME)
                 pos += snprintf(buf + pos, remaining(pos), "%s:",
-                                        desc->function);
+                                desc->function);
         if (desc->flags & _DPRINTK_FLAGS_INCL_LINENO)
                 pos += snprintf(buf + pos, remaining(pos), "%d:",
-                                        desc->lineno);
+                                desc->lineno);
         if (pos - pos_after_tid)
                 pos += snprintf(buf + pos, remaining(pos), " ");
         if (pos >= PREFIX_SIZE)
@@ -559,9 +559,13 @@ int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
         BUG_ON(!fmt);
 
         va_start(args, fmt);
+
         vaf.fmt = fmt;
         vaf.va = &args;
-        res = printk("%s%pV", dynamic_emit_prefix(descriptor, buf), &vaf);
+
+        res = printk(KERN_DEBUG "%s%pV",
+                     dynamic_emit_prefix(descriptor, buf), &vaf);
+
         va_end(args);
 
         return res;
@@ -574,15 +578,30 @@ int __dynamic_dev_dbg(struct _ddebug *descriptor,
         struct va_format vaf;
         va_list args;
         int res;
-        char buf[PREFIX_SIZE];
 
         BUG_ON(!descriptor);
         BUG_ON(!fmt);
 
         va_start(args, fmt);
+
         vaf.fmt = fmt;
         vaf.va = &args;
-        res = __dev_printk(dynamic_emit_prefix(descriptor, buf), dev, &vaf);
+
+        if (!dev) {
+                res = printk(KERN_DEBUG "(NULL device *): %pV", &vaf);
+        } else {
+                char buf[PREFIX_SIZE];
+                char dict[128];
+                size_t dictlen;
+
+                dictlen = create_syslog_header(dev, dict, sizeof(dict));
+
+                res = printk_emit(0, 7, dictlen ? dict : NULL, dictlen,
+                                  "%s%s %s: %pV",
+                                  dynamic_emit_prefix(descriptor, buf),
+                                  dev_driver_string(dev), dev_name(dev), &vaf);
+        }
+
         va_end(args);
 
         return res;