linux-kernel - [PATCH] platform/mellanox: mlxreg-lc: fix error code in mlxreg_lc_create_static

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Date:   Wed, 10 Nov 2021 10:43:46 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        Vadim Pasternak <vadimp@...dia.com>
Cc:     Mark Gross <markgross@...nel.org>,
        Michael Shych <michaelsh@...dia.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] platform/mellanox: mlxreg-lc: fix error code in
 mlxreg_lc_create_static_devices()

This code should be using PTR_ERR() instead of IS_ERR().  And because
it's using the wrong "dev->client" pointer, the IS_ERR() check will be
false, meaning the function returns success.

Fixes: 62f9529b8d5c ("platform/mellanox: mlxreg-lc: Add initial support for Nvidia line card devices")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/platform/mellanox/mlxreg-lc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/mellanox/mlxreg-lc.c b/drivers/platform/mellanox/mlxreg-lc.c
index 0b7f58feb701..c897a2f15840 100644
--- a/drivers/platform/mellanox/mlxreg-lc.c
+++ b/drivers/platform/mellanox/mlxreg-lc.c
@@ -413,7 +413,7 @@ mlxreg_lc_create_static_devices(struct mlxreg_lc *mlxreg_lc, struct mlxreg_hotpl
 				int size)
 {
 	struct mlxreg_hotplug_device *dev = devs;
-	int i;
+	int i, ret;
 
 	/* Create static I2C device feeding by auxiliary or main power. */
 	for (i = 0; i < size; i++, dev++) {
@@ -423,6 +423,7 @@ mlxreg_lc_create_static_devices(struct mlxreg_lc *mlxreg_lc, struct mlxreg_hotpl
 				dev->brdinfo->type, dev->nr, dev->brdinfo->addr);
 
 			dev->adapter = NULL;
+			ret = PTR_ERR(dev->client);
 			goto fail_create_static_devices;
 		}
 	}
@@ -435,7 +436,7 @@ mlxreg_lc_create_static_devices(struct mlxreg_lc *mlxreg_lc, struct mlxreg_hotpl
 		i2c_unregister_device(dev->client);
 		dev->client = NULL;
 	}
-	return IS_ERR(dev->client);
+	return ret;
 }
 
 static void
-- 
2.20.1