[PATCH] Ignore trailing whitespace on kernel parameters correctly

Dave Jones says:

... if the modprobe.conf has trailing whitespace, modules fail to load
with the following helpful message..

	snd_intel8x0: Unknown parameter `'

Previous version truncated last argument.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/kernel/params.c b/kernel/params.c
index fbf173215fd2..1a8614bac5d5 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -80,8 +80,6 @@ static char *next_arg(char *args, char **param, char **val)
         int in_quote = 0, quoted = 0;
         char *next;
 
-        /* Chew any extra spaces */
-        while (*args == ' ') args++;
         if (*args == '"') {
                 args++;
                 in_quote = 1;
@@ -121,6 +119,10 @@ static char *next_arg(char *args, char **param, char **val)
                 next = args + i + 1;
         } else
                 next = args + i;
+
+        /* Chew up trailing spaces. */
+        while (*next == ' ')
+                next++;
         return next;
 }
 
@@ -135,6 +137,10 @@ int parse_args(const char *name,
 
         DEBUGP("Parsing ARGS: %s\n", args);
 
+        /* Chew leading spaces */
+        while (*args == ' ')
+                args++;
+
         while (*args) {
                 int ret;