linux-kernel - Re: [PATCH v5 4/4] ufs: core: Remove ufshcd_map_desc_id_to

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Message-ID: <0340ff7f-291f-7041-f75e-4ab8b59785a7@acm.org>
Date:   Mon, 12 Dec 2022 11:26:20 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Arthur Simchaev <Arthur.Simchaev@....com>,
        martin.petersen@...cle.com
Cc:     beanhuo@...ron.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 4/4] ufs: core: Remove ufshcd_map_desc_id_to_length
 function

On 12/11/22 05:05, Arthur Simchaev wrote:
> There shouldn't be any restriction of the descriptor size
> (not the descriptor id for that matter) up to QUERY_DESC_MAX_SIZE.
> According to the spec, the caller can use any descriptor size,
> and it is up to the device to return the actual size.
> Therefore there shouldn't be any sizes hardcoded in the kernel,
> nor any need to cache it, hence ufshcd_map_desc_id_to_length function is
> redundant. Always read the descriptors with QUERY_DESC_MAX_SIZE size.

Reviewed-by: Bart Van Assche <bvanassche@....org>