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From:   Chen Zhongjin <chenzhongjin@huawei.com>
To:     <linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>
CC:     <skhan@linuxfoundation.org>, <kieran.bingham@ideasonboard.com>,
        <mchehab@kernel.org>, <hans.verkuil@cisco.com>,
        <helen.koike@collabora.com>, <chenzhongjin@huawei.com>
Subject: [PATCH] media: vimc: Fix wrong function called when vimc_init() fails
Date:   Thu, 10 Nov 2022 15:26:33 +0800
Message-ID: <20221110072633.210437-1-chenzhongjin@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

In vimc_init(), when platform_driver_register(&vimc_pdrv) fails,
platform_driver_unregister(&vimc_pdrv) is wrongly called rather than
platform_device_unregister(&vimc_pdev), which causes kernel warning:

 Unexpected driver unregister!
 WARNING: CPU: 1 PID: 14517 at drivers/base/driver.c:270 driver_unregister+0x8f/0xb0
 RIP: 0010:driver_unregister+0x8f/0xb0
 Call Trace:
  <TASK>
  vimc_init+0x7d/0x1000 [vimc]
  do_one_initcall+0xd0/0x4e0
  do_init_module+0x1cf/0x6b0
  load_module+0x65c2/0x7820

Fixes: 4a29b7090749 ("[media] vimc: Subdevices as modules")
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
 drivers/media/test-drivers/vimc/vimc-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/test-drivers/vimc/vimc-core.c b/drivers/media/test-drivers/vimc/vimc-core.c
index 2ae7a0f11ebf..e82cfa5ffbf4 100644
--- a/drivers/media/test-drivers/vimc/vimc-core.c
+++ b/drivers/media/test-drivers/vimc/vimc-core.c
@@ -433,7 +433,7 @@ static int __init vimc_init(void)
 	if (ret) {
 		dev_err(&vimc_pdev.dev,
 			"platform driver registration failed (err=%d)\n", ret);
-		platform_driver_unregister(&vimc_pdrv);
+		platform_device_unregister(&vimc_pdev);
 		return ret;
 	}
 
-- 
2.17.1