This patch makes function store_add_link initialize the pointer to an AIM
right before the channel is probed. It is needed, the AIM may already call
most_start_channel while probe_channel is still running. At this point the
pointer to the AIM must not be NULL.
Signed-off-by: Christian Gromm <christian.gr...@microchip.com>
---
This patch has been resent on behalf of Greg Kroah-Hartman
<gre...@linuxfoundation.org>
v2: Changed patch description to be more distinct on why this patch is
important to apply, what has been claimed by Dan Carpenter.
drivers/staging/most/mostcore/core.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/most/mostcore/core.c
b/drivers/staging/most/mostcore/core.c
index d5ef61d..21c550c 100644
--- a/drivers/staging/most/mostcore/core.c
+++ b/drivers/staging/most/mostcore/core.c
@@ -996,11 +996,14 @@ static ssize_t store_add_link(struct most_aim_obj
*aim_obj,
else
return -ENOSPC;
+ *aim_ptr = aim_obj->driver;
ret = aim_obj->driver->probe_channel(c->iface, c->channel_id,
&c->cfg, &c->kobj, mdev_devnod);
- if (ret)
+ if (ret) {
+ *aim_ptr = NULL;
return ret;
- *aim_ptr = aim_obj->driver;
+ }
+
return len;
}
--
1.7.9.5
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