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authorBo YU <tsu.yubo@gmail.com>2019-03-28 03:47:37 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-02 17:56:54 +0200
commit01b76c32e3f30d54ab8ec1efeed3c6ecef7f6027 (patch)
treec80b9f227b8d741a2d212bf3614ba9de3ad60d74 /drivers/misc
parentc24b074cfd67907ac48b64487755200bdbf531e1 (diff)
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: f6f9279f2bf0 ("misc: fastrpc: Add Qualcomm fastrpc basic driver model") Signed-off-by: Bo YU <tsu.yubo@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/fastrpc.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 39f832d27288..36d0d5c9cfba 100644
--- 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;
}