From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
[ Upstream commit d99247f9b542533ddbf87a3481a05473b8e48194 ]
If an error occurs after a successful 'kfifo_alloc()' call, it must be
undone by a corresponding 'kfifo_free()' call, as already done in the
remove function.
While at it, move the 'platform_device_put()' call to this new error
handling path and explicitly return 0 in the success path.
Fixes: b5dc75c915cd ("firmware: stratix10-svc: extend svc to support new RSU features")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Link: https://lore.kernel.org/r/0ca3f3ab139c53e846804455a1e7599ee8ae896a.1621621271.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/firmware/stratix10-svc.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index b485321189e1..b2b4ba240fb1 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -1026,24 +1026,32 @@ 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);
- return ret;
- }
+ if (ret)
+ goto err_put_device;
+
dev_set_drvdata(dev, svc);
pr_info("Intel Service Layer Driver Initialized\n");
+ return 0;
+
+err_put_device:
+ platform_device_put(svc->stratix10_svc_rsu);
+err_free_kfifo:
+ kfifo_free(&controller->svc_fifo);
return ret;
}
--
2.30.2
