misc: fastrpc: add checked value for dma_set_mask

There be should check return value from dma_set_mask to throw some info if fail to set dma mask. Detected by CoverityScan, CID# 1443983: Error handling issues (CHECKED_RETURN) Fixes: f6f9279 ("misc: fastrpc: Add Qualcomm fastrpc basic driver model") Signed-off-by: Bo YU <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
dabrace · Apr 2, 2019 · 01b76c3 · 01b76c3
1 parent c24b074
commit 01b76c3
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
@@ -1184,6 +1184,7 @@ static int fastrpc_cb_probe(struct platform_device *pdev)
 	struct fastrpc_session_ctx *sess;
 	struct device *dev = &pdev->dev;
 	int i, sessions = 0;
+	int rc;
 
 	cctx = dev_get_drvdata(dev->parent);
 	if (!cctx)
@@ -1213,7 +1214,11 @@ static int fastrpc_cb_probe(struct platform_device *pdev)
 	}
 	cctx->sesscount++;
 	spin_unlock(&cctx->lock);
-	dma_set_mask(dev, DMA_BIT_MASK(32));
+	rc = dma_set_mask(dev, DMA_BIT_MASK(32));
+	if (rc) {
+		dev_err(dev, "32-bit DMA enable failed\n");
+		return rc;
+	}
 
 	return 0;
 }