Staging: line6: workaround for null pointer bug

Signed-off-by: Markus Grabner <grabner@icg.tugraz.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c
index a3c9924..06a6db8 100644 (file)
--- a/drivers/staging/line6/capture.c
+++ b/drivers/staging/line6/capture.c
@@ -147,6 +147,9 @@ void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize)
        const int bytes_per_frame = line6pcm->properties->bytes_per_frame;
        int frames = fsize / bytes_per_frame;
 
+       if (runtime == 0)
+               return;
+
        if (line6pcm->pos_in_done + frames > runtime->buffer_size) {
                /*
                   The transferred area goes over buffer boundary,

diff --git a/drivers/staging/line6/revision.h b/drivers/staging/line6/revision.h
index e9883f6..350d0df 100644 (file)
--- a/drivers/staging/line6/revision.h
+++ b/drivers/staging/line6/revision.h
@@ -1,4 +1,4 @@
 #ifndef DRIVER_REVISION
 /* current subversion revision */
-#define DRIVER_REVISION " (revision 684)"
+#define DRIVER_REVISION " (revision 690)"
 #endif