linux-kernel - [PATCH -next 2/3] firmware: stratix10-svc: fix memory leak when platform_device

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Date:   Tue, 19 Jul 2022 22:02:56 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>
CC:     <dinguyen@...nel.org>
Subject: [PATCH -next 2/3] firmware: stratix10-svc: fix memory leak when platform_device_alloc/add() fails

If platform_device_alloc/add() failed in stratix10_svc_drv_probe(),
'svc_fifo' and 'genpool' should be freed.

Fixes: e6281c26674e ("firmware: stratix10-svc: Add support for FCS")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/firmware/stratix10-svc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 1a5640b3ab42..cb824f63faa8 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -1202,19 +1202,20 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
 	ret = platform_device_add(svc->stratix10_svc_rsu);
 	if (ret) {
 		platform_device_put(svc->stratix10_svc_rsu);
-		return ret;
+		goto err_free_kfifo;
 	}
 
 	svc->intel_svc_fcs = platform_device_alloc(INTEL_FCS, 1);
 	if (!svc->intel_svc_fcs) {
 		dev_err(dev, "failed to allocate %s device\n", INTEL_FCS);
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto err_free_kfifo;
 	}
 
 	ret = platform_device_add(svc->intel_svc_fcs);
 	if (ret) {
 		platform_device_put(svc->intel_svc_fcs);
-		return ret;
+		goto err_free_kfifo;
 	}
 
 	dev_set_drvdata(dev, svc);
-- 
2.25.1