Because of the possible failure of the dma_supported(), the
dma_set_mask_and_coherent() may return error num.
Therefore, it should be better to check it and return the error if
fails.
Fixes: f6f9279f2bf0 ("misc: fastrpc: Add Qualcomm fastrpc basic driver model")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
drivers/misc/fastrpc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index beda610e6b30..dd1c4a75bb1d 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1644,7 +1644,12 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
kref_init(&data->refcount);
dev_set_drvdata(&rpdev->dev, data);
- dma_set_mask_and_coherent(rdev, DMA_BIT_MASK(32));
+ err = dma_set_mask_and_coherent(rdev, DMA_BIT_MASK(32));
+ if (err) {
+ kfree(data);
+ return err;
+ }
+
INIT_LIST_HEAD(&data->users);
spin_lock_init(&data->lock);
idr_init(&data->ctx_idr);
--
2.25.1
