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Date:   Tue, 6 Sep 2022 12:58:13 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Shunsuke Mie <mie@igel.co.jp>
Cc:     Kishon Vijay Abraham I <kishon@ti.com>,
        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <kw@linux.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Bjorn Helgaas <bhelgaas@google.com>, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 1/2] misc: pci_endpoint_test: Aggregate params
 checking for xfer
Message-ID: <YxcnxSPEVeCcMHmZ@kroah.com>
References: <20220906101555.106033-1-mie@igel.co.jp>
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In-Reply-To: <20220906101555.106033-1-mie@igel.co.jp>
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On Tue, Sep 06, 2022 at 07:15:54PM +0900, Shunsuke Mie wrote:
> Each transfer test functions have same parameter checking code. This patch
> unites those to an introduced function.
> 
> Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
> ---
> Changes in v2:
> * New patch
> ---
> ---
>  drivers/misc/pci_endpoint_test.c | 35 ++++++++++++++++++++++++++------
>  1 file changed, 29 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
> index 8f786a225dcf..3bd9f135cdac 100644
> --- a/drivers/misc/pci_endpoint_test.c
> +++ b/drivers/misc/pci_endpoint_test.c
> @@ -332,6 +332,17 @@ static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test,
>  	return false;
>  }
>  
> +static int pci_endpoint_test_validate_xfer_params(struct device *dev,
> +		struct pci_endpoint_test_xfer_param *param, size_t alignment)
> +{
> +	if (param->size > SIZE_MAX - alignment) {
> +		dev_err(dev, "Maximum transfer data size exceeded\n");

Do not allow userspace to spam the kernel log.

This should be dev_dbg() at most.

thanks,

greg k-h