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authorThomas Pugliese <thomas.pugliese@gmail.com>2014-04-25 19:30:33 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-28 01:56:54 +0400
commit7b360ee09a8bec5783cbecdcb17cd8d70edadf56 (patch)
tree1f0e15c0e2e5e5c7b3ce1ce6fbebe5f1bde7b24c /drivers/uwb/rsv.c
parent90ec00d54e28f4b038e66905ea5b9478bcdc3f37 (diff)
downloadlinux-7b360ee09a8bec5783cbecdcb17cd8d70edadf56.tar.xz
uwb: add error messages when reservation establish fails
Add better error messages during the channel change/reservation establish process. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uwb/rsv.c')
-rw-r--r--drivers/uwb/rsv.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c
index 4026f1adff01..0887ae982783 100644
--- a/drivers/uwb/rsv.c
+++ b/drivers/uwb/rsv.c
@@ -163,8 +163,10 @@ static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
}
stream = find_first_zero_bit(streams_bm, UWB_NUM_STREAMS);
- if (stream >= UWB_NUM_STREAMS)
+ if (stream >= UWB_NUM_STREAMS) {
+ dev_err(dev, "%s: no available stream found\n", __func__);
return -EBUSY;
+ }
rsv->stream = stream;
set_bit(stream, streams_bm);
@@ -555,12 +557,16 @@ int uwb_rsv_establish(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
struct uwb_mas_bm available;
+ struct device *dev = &rc->uwb_dev.dev;
int ret;
mutex_lock(&rc->rsvs_mutex);
ret = uwb_rsv_get_stream(rsv);
- if (ret)
+ if (ret) {
+ dev_err(dev, "%s: uwb_rsv_get_stream failed: %d\n",
+ __func__, ret);
goto out;
+ }
rsv->tiebreaker = prandom_u32() & 1;
/* get available mas bitmap */
@@ -570,12 +576,16 @@ int uwb_rsv_establish(struct uwb_rsv *rsv)
if (ret == UWB_RSV_ALLOC_NOT_FOUND) {
ret = -EBUSY;
uwb_rsv_put_stream(rsv);
+ dev_err(dev, "%s: uwb_rsv_find_best_allocation failed: %d\n",
+ __func__, ret);
goto out;
}
ret = uwb_drp_avail_reserve_pending(rc, &rsv->mas);
if (ret != 0) {
uwb_rsv_put_stream(rsv);
+ dev_err(dev, "%s: uwb_drp_avail_reserve_pending failed: %d\n",
+ __func__, ret);
goto out;
}