Re: [PATCH] firmware: stratix10-svc: Fix some error handling paths in 'stratix10_svc_drv_probe()'

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Le 28/04/2020 à 13:55, Dan Carpenter a écrit :
On Sun, Apr 26, 2020 at 09:03:07PM +0200, Christophe JAILLET wrote:
If an error occurs after calling 'kfifo_alloc()', the allocated memory
should be freed with 'kfifo_free()', as already done in the remove
function.

Fixes: b5dc75c915cd ("firmware: stratix10-svc: extend svc to support new RSU features")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
  drivers/firmware/stratix10-svc.c | 15 +++++++++++----
  1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index d5f0769f3761..cc9df9589195 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -1043,24 +1043,31 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev)
/* add svc client device(s) */
  	svc = devm_kzalloc(dev, sizeof(*svc), GFP_KERNEL);
-	if (!svc)
-		return -ENOMEM;
+	if (!svc) {
+		ret = -ENOMEM;
+		goto err_free_kfifo;
+	}
svc->stratix10_svc_rsu = platform_device_alloc(STRATIX10_RSU, 0);
  	if (!svc->stratix10_svc_rsu) {
  		dev_err(dev, "failed to allocate %s device\n", STRATIX10_RSU);
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto err_free_kfifo;
  	}
ret = platform_device_add(svc->stratix10_svc_rsu);
  	if (ret) {
  		platform_device_put(svc->stratix10_svc_rsu);
Why not move this to the unwind code as well and do "goto put_platform;"?

Sure, I'll send a V2.

CJ


regards,
dan carpenter

-		return ret;
+		goto err_free_kfifo;
  	}
  	dev_set_drvdata(dev, svc);
pr_info("Intel Service Layer Driver Initialized\n"); + return 0;
+
+err_free_kfifo:
+	kfifo_free(&controller->svc_fifo);
  	return ret;
  }





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