linux-kernel - [PATCH 5.14 122/151] platform/mellanox: mlxreg-io: Fix read access of n-bytes size attributes

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Message-Id: <20211018132344.639382497@linuxfoundation.org>
Date:   Mon, 18 Oct 2021 15:25:01 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Vadim Pasternak <vadimp@...dia.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH 5.14 122/151] platform/mellanox: mlxreg-io: Fix read access of n-bytes size attributes

From: Vadim Pasternak <vadimp@...dia.com>

commit db9cc7d6f95e7d89b0ce57e785cfd9d67a7505d8 upstream.

Fix shift argument for function rol32(). It should be provided in bits,
while was provided in bytes.

Fixes: 86148190a7db ("platform/mellanox: mlxreg-io: Add support for complex attributes")
Signed-off-by: Vadim Pasternak <vadimp@...dia.com>
Link: https://lore.kernel.org/r/20210927142214.2613929-3-vadimp@nvidia.com
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/platform/mellanox/mlxreg-io.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/mellanox/mlxreg-io.c
+++ b/drivers/platform/mellanox/mlxreg-io.c
@@ -98,7 +98,7 @@ mlxreg_io_get_reg(void *regmap, struct m
 			if (ret)
 				goto access_error;
 
-			*regval |= rol32(val, regsize * i);
+			*regval |= rol32(val, regsize * i * 8);
 		}
 	}