linux-kernel - Re: [PATCH 07/10] block: mspro_blk: use blk_is_valid_logical_block

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Date:   Tue, 21 Jul 2020 11:17:38 +0000
From:   Damien Le Moal <Damien.LeMoal@....com>
To:     Maxim Levitsky <mlevitsk@...hat.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Keith Busch <kbusch@...nel.org>,
        Josef Bacik <josef@...icpanda.com>,
        "open list:BLOCK LAYER" <linux-block@...r.kernel.org>,
        Sagi Grimberg <sagi@...mberg.me>, Jens Axboe <axboe@...nel.dk>,
        "open list:NVM EXPRESS DRIVER" <linux-nvme@...ts.infradead.org>,
        "open list:SCSI CDROM DRIVER" <linux-scsi@...r.kernel.org>,
        Tejun Heo <tj@...nel.org>,
        Bart Van Assche <bvanassche@....org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jason Wang <jasowang@...hat.com>,
        Maxim Levitsky <maximlevitsky@...il.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Colin Ian King <colin.king@...onical.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Ajay Joshi <Ajay.Joshi@....com>,
        Ming Lei <ming.lei@...hat.com>,
        "open list:SONY MEMORYSTICK SUBSYSTEM" <linux-mmc@...r.kernel.org>,
        Christoph Hellwig <hch@....de>,
        Satya Tangirala <satyat@...gle.com>,
        "open list:NETWORK BLOCK DEVICE (NBD)" <nbd@...er.debian.org>,
        Hou Tao <houtao1@...wei.com>, Jens Axboe <axboe@...com>,
        "open list:VIRTIO CORE AND NET DRIVERS" 
        <virtualization@...ts.linux-foundation.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Alex Dubov <oakad@...oo.com>
Subject: Re: [PATCH 07/10] block: mspro_blk: use
 blk_is_valid_logical_block_size

On 2020/07/21 19:55, Maxim Levitsky wrote:
> Signed-off-by: Maxim Levitsky <mlevitsk@...hat.com>
> ---
>  drivers/memstick/core/mspro_block.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
> index cd6b8d4f23350..86c9eb0aef512 100644
> --- a/drivers/memstick/core/mspro_block.c
> +++ b/drivers/memstick/core/mspro_block.c
> @@ -1199,6 +1199,12 @@ static int mspro_block_init_disk(struct memstick_dev *card)
>  
>  	msb->page_size = be16_to_cpu(sys_info->unit_size);
>  
> +	if (!(blk_is_valid_logical_block_size(msb->page_size))) {
> +		dev_warn(&card->dev,
> +			 "unsupported block size %d", msb->page_size);
> +		return -EINVAL;
> +	}
> +
>  	mutex_lock(&mspro_block_disk_lock);
>  	disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
>  	mutex_unlock(&mspro_block_disk_lock);
> 

Looks good to me.

Reviewed-by: Damien Le Moal <damien.lemoal@....com>

-- 
Damien Le Moal
Western Digital Research