diff options
| author | Roy Pledge <Roy.Pledge@freescale.com> | 2014-03-05 19:57:45 (GMT) |
|---|---|---|
| committer | Jose Rivera <German.Rivera@freescale.com> | 2014-03-06 04:02:10 (GMT) |
| commit | 30abf3c138247ef7780caef4b35a54df19ebc858 (patch) | |
| tree | a708b720b6d97f8dacffb2fe25e54be78b05a414 /drivers | |
| parent | e522e216e31ee67b3c7894188d55a201b5e224e7 (diff) | |
| download | linux-fsl-qoriq-30abf3c138247ef7780caef4b35a54df19ebc858.tar.xz | |
Only initalize fragment owner when fragement is first created
When a USDPAA memory fragment is mapped into a user space process the
owner should only be initialized if the fragment has just been created.
Failure to do this will cause an error if another process is using the
fragment when the mapping is done.
Signed-off-by: Roy Pledge <Roy.Pledge@freescale.com>
Change-Id: I0fdeb195f5d1910ec70f6f56d772dd2b8cedab4c
Reviewed-on: http://git.am.freescale.net:8181/9427
Reviewed-by: Haiying Wang <Haiying.Wang@freescale.com>
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/fsl_qbman/fsl_usdpaa.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/fsl_qbman/fsl_usdpaa.c b/drivers/staging/fsl_qbman/fsl_usdpaa.c index 5f72120..11b2a8d 100644 --- a/drivers/staging/fsl_qbman/fsl_usdpaa.c +++ b/drivers/staging/fsl_qbman/fsl_usdpaa.c @@ -976,7 +976,8 @@ do_map: strncpy(start_frag->name, i->name, USDPAA_DMA_NAME_MAX); start_frag->has_locking = i->has_locking; init_waitqueue_head(&start_frag->wq); - start_frag->owner = NULL; + if (i->did_create == 1) + start_frag->owner = NULL; /* Setup the map entry */ map->root_frag = start_frag; |