ALSA: au88x0: Fix zero clear of stream->resources

There are a few calls of memset() to stream->resources, but they all
are called in a wrong size, sizeof(unsigned char) * VORTEX_RESOURCE_LAST,
while this field is a u32 array.  This may leave the memories not
zero-cleared.

Fix it by replacing them with a simpler sizeof(stream->resources)
instead.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c
index 4667c32..4a054d7 100644 (file)
--- a/sound/pci/au88x0/au88x0_core.c
+++ b/sound/pci/au88x0/au88x0_core.c
@@ -2151,8 +2151,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
                                                           stream->resources, en,
                                                           VORTEX_RESOURCE_SRC)) < 0) {
                                        memset(stream->resources, 0,
-                                              sizeof(unsigned char) *
-                                              VORTEX_RESOURCE_LAST);
+                                              sizeof(stream->resources));
                                        return -EBUSY;
                                }
                                if (stream->type != VORTEX_PCM_A3D) {
@@ -2162,7 +2161,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
                                                                   VORTEX_RESOURCE_MIXIN)) < 0) {
                                                memset(stream->resources,
                                                       0,
-                                                      sizeof(unsigned char) * VORTEX_RESOURCE_LAST);
+                                                      sizeof(stream->resources));
                                                return -EBUSY;
                                        }
                                }
@@ -2175,8 +2174,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
                                                   stream->resources, en,
                                                   VORTEX_RESOURCE_A3D)) < 0) {
                                memset(stream->resources, 0,
-                                      sizeof(unsigned char) *
-                                      VORTEX_RESOURCE_LAST);
+                                      sizeof(stream->resources));
                                dev_err(vortex->card->dev,
                                        "out of A3D sources. Sorry\n");
                                return -EBUSY;
@@ -2290,8 +2288,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
                                                   VORTEX_RESOURCE_MIXOUT))
                            < 0) {
                                memset(stream->resources, 0,
-                                      sizeof(unsigned char) *
-                                      VORTEX_RESOURCE_LAST);
+                                      sizeof(stream->resources));
                                return -EBUSY;
                        }
                        if ((src[i] =
@@ -2299,8 +2296,7 @@ vortex_adb_allocroute(vortex_t *vortex, int dma, int nr_ch, int dir,
                                                   stream->resources, en,
                                                   VORTEX_RESOURCE_SRC)) < 0) {
                                memset(stream->resources, 0,
-                                      sizeof(unsigned char) *
-                                      VORTEX_RESOURCE_LAST);
+                                      sizeof(stream->resources));
                                return -EBUSY;
                        }
                }