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Message-ID: <MN2PR12MB361677235F0526AC99E0B3C2ABF00@MN2PR12MB3616.namprd12.prod.outlook.com>
Date: Sat, 5 Dec 2020 01:39:32 +0000
From: Khalil Blaiech <kblaiech@...dia.com>
To: Xu Wang <vulab@...as.ac.cn>
CC: "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] i2c: mlxbf: Fix an error pointer vs NULL check
> In case of error, the function devm_ioremap() returns NULL pointer not
> ERR_PTR(). The IS_ERR() test in the return value check should be
> replaced with NULL test.
>
> Signed-off-by: Xu Wang <vulab@...as.ac.cn>
Thank you very much for your patch. Please note that previous patch
has been posted to address this issue.
> ---
> drivers/i2c/busses/i2c-mlxbf.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c
> index 33574d40ea9c..73a58beb7b82 100644
> --- a/drivers/i2c/busses/i2c-mlxbf.c
> +++ b/drivers/i2c/busses/i2c-mlxbf.c
> @@ -1258,9 +1258,9 @@ static int mlxbf_i2c_get_gpio(struct
> platform_device *pdev,
> return -EFAULT;
>
> gpio_res->io = devm_ioremap(dev, params->start, size);
> - if (IS_ERR(gpio_res->io)) {
> + if (!gpio_res->io) {
> devm_release_mem_region(dev, params->start, size);
> - return PTR_ERR(gpio_res->io);
> + return -ENOMEM;
> }
>
> return 0;
> @@ -1323,9 +1323,9 @@ static int mlxbf_i2c_get_corepll(struct
> platform_device *pdev,
> return -EFAULT;
>
> corepll_res->io = devm_ioremap(dev, params->start, size);
> - if (IS_ERR(corepll_res->io)) {
> + if (!corepll_res->io) {
> devm_release_mem_region(dev, params->start, size);
> - return PTR_ERR(corepll_res->io);
> + return -ENOMEM;
> }
>
> return 0;
> --
> 2.17.1
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