linux-kernel - [PATCH] staging: olpc_dcon: Do not call platform_device_unregister() in dcon

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Date:   Fri, 20 Nov 2020 15:49:32 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     <jfrederich@...il.com>, <dsd@...top.org>,
        <jon.nettleton@...il.com>, <gregkh@...uxfoundation.org>
CC:     <devel@...verdev.osuosl.org>, <linux-kernel@...r.kernel.org>,
        <jingxiangfeng@...wei.com>
Subject: [PATCH] staging: olpc_dcon: Do not call platform_device_unregister() in dcon_probe()

In dcon_probe(), when platform_device_add() failes to add the device,
it jumps to call platform_device_unregister() to remove the device,
which is unnecessary. So use platform_device_put() instead.

Fixes: 53c43c5ca133 ("Revert "Staging: olpc_dcon: Remove obsolete driver"")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
---
 drivers/staging/olpc_dcon/olpc_dcon.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index a0d6d90f4cc8..e7281212db5b 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -659,8 +659,9 @@ static int dcon_probe(struct i2c_client *client, const struct i2c_device_id *id)
  ecreate:
 	for (j = 0; j < i; j++)
 		device_remove_file(&dcon_device->dev, &dcon_device_files[j]);
+	platform_device_del(dcon_device);
  edev:
-	platform_device_unregister(dcon_device);
+	platform_device_put(dcon_device);
 	dcon_device = NULL;
  eirq:
 	free_irq(DCON_IRQ, dcon);
-- 
2.17.1