misc: fastrpc: Fix device_open when no session is available
This change fixes fastrpc_device_open() when no session is available and
return an error in such case.
Signed-off-by: Thierry Escande <thierry.escande@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 4b0db33..89aec17 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1016,10 +1016,19 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp)
INIT_LIST_HEAD(&fl->user);
fl->tgid = current->tgid;
fl->cctx = cctx;
+
+ fl->sctx = fastrpc_session_alloc(cctx);
+ if (!fl->sctx) {
+ dev_err(&cctx->rpdev->dev, "No session available\n");
+ mutex_destroy(&fl->mutex);
+ kfree(fl);
+
+ return -EBUSY;
+ }
+
spin_lock(&cctx->lock);
list_add_tail(&fl->user, &cctx->users);
spin_unlock(&cctx->lock);
- fl->sctx = fastrpc_session_alloc(cctx);
return 0;
}