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[RESEND] scsi: sun_esp: fix device reference leaks

Message ID 20170621093509.GL6366@localhost (mailing list archive)
State Accepted
Headers show

Commit Message

Johan Hovold June 21, 2017, 9:35 a.m. UTC 
Make sure to drop the reference to the dma device taken by
of_find_device_by_node() on probe errors and on driver unbind.

Fixes: 334ae614772b ("sparc: Kill SBUS DVMA layer.")
Signed-off-by: Johan Hovold <johan@kernel.org>
---

No comment to this one for over a month so resending. Also added David
Miller on CC.

Johan


 drivers/scsi/sun_esp.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

Comments

Martin K. Petersen June 28, 2017, 1:47 a.m. UTC | #1 
Johan,

> Make sure to drop the reference to the dma device taken by
> of_find_device_by_node() on probe errors and on driver unbind.

Looks good to me.

Applied to 4.13/scsi-queue.
diff mbox

Patch

diff --git a/drivers/scsi/sun_esp.c b/drivers/scsi/sun_esp.c
index 7b6d4c2087d7..747ee64a78e1 100644
--- a/drivers/scsi/sun_esp.c
+++ b/drivers/scsi/sun_esp.c
@@ -566,6 +566,7 @@  static int esp_sbus_probe(struct platform_device *op)
 	struct device_node *dp = op->dev.of_node;
 	struct platform_device *dma_of = NULL;
 	int hme = 0;
+	int ret;
 
 	if (dp->parent &&
 	    (!strcmp(dp->parent->name, "espdma") ||
@@ -580,7 +581,11 @@  static int esp_sbus_probe(struct platform_device *op)
 	if (!dma_of)
 		return -ENODEV;
 
-	return esp_sbus_probe_one(op, dma_of, hme);
+	ret = esp_sbus_probe_one(op, dma_of, hme);
+	if (ret)
+		put_device(&dma_of->dev);
+
+	return ret;
 }
 
 static int esp_sbus_remove(struct platform_device *op)
@@ -613,6 +618,8 @@  static int esp_sbus_remove(struct platform_device *op)
 
 	dev_set_drvdata(&op->dev, NULL);
 
+	put_device(&dma_of->dev);
+
 	return 0;
 }