linux-kernel - [PATCH] mmc: tmio: do not print real IOMEM pointer

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Date:   Mon, 16 Nov 2020 17:42:52 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Dan Carpenter <dan.carpenter@...cle.com>, kbuild-all@...ts.01.org,
        Krzysztof Kozlowski <krzk@...nel.org>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] mmc: tmio: do not print real IOMEM pointer

Printing kernel pointers is discouraged because they might leak kernel
memory layout.  This fixes smatch warning:

    drivers/mmc/host/tmio_mmc.c:177 tmio_mmc_probe() warn: argument 3 to %08lx specifier is cast from pointer

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/mmc/host/tmio_mmc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index d2d3b8df1bbe..b55a29c53d9c 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -174,8 +174,7 @@ static int tmio_mmc_probe(struct platform_device *pdev)
 	if (ret)
 		goto host_remove;
 
-	pr_info("%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
-		(unsigned long)host->ctl, irq);
+	pr_info("%s at 0x%p irq %d\n", mmc_hostname(host->mmc), host->ctl, irq);
 
 	return 0;
 
-- 
2.25.1