linux-kernel - Re: [PATCH 1/1] i3c: master: cdns: Fix reading status register

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Message-ID: <20230912125704.5fb1a102@xps-13>
Date:   Tue, 12 Sep 2023 12:57:04 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Joshua Yeong <joshua.yeong@...rfivetech.com>
Cc:     <pgaj@...ence.com>, <alexandre.belloni@...tlin.com>,
        <linux-i3c@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] i3c: master: cdns: Fix reading status register

Hi Joshua,

joshua.yeong@...rfivetech.com wrote on Mon, 11 Sep 2023 16:16:24 +0800:

> IBIR_DEPTH and CMDR_DEPTH should read from status0 instead of status1

				  be

Missing '.' at the end.

Missing Fixes: tag as well as Cc: stable.

> 
> Signed-off-by: Joshua Yeong <joshua.yeong@...rfivetech.com>
> ---
>  drivers/i3c/master/i3c-master-cdns.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c
> index 49551db71bc9..8f1fda3c7ac5 100644
> --- a/drivers/i3c/master/i3c-master-cdns.c
> +++ b/drivers/i3c/master/i3c-master-cdns.c
> @@ -191,7 +191,7 @@
>  #define SLV_STATUS1_HJ_DIS		BIT(18)
>  #define SLV_STATUS1_MR_DIS		BIT(17)
>  #define SLV_STATUS1_PROT_ERR		BIT(16)
> -#define SLV_STATUS1_DA(x)		(((s) & GENMASK(15, 9)) >> 9)
> +#define SLV_STATUS1_DA(s)		(((s) & GENMASK(15, 9)) >> 9)
>  #define SLV_STATUS1_HAS_DA		BIT(8)
>  #define SLV_STATUS1_DDR_RX_FULL		BIT(7)
>  #define SLV_STATUS1_DDR_TX_FULL		BIT(6)
> @@ -1623,13 +1623,13 @@ static int cdns_i3c_master_probe(struct platform_device *pdev)
>  	/* Device ID0 is reserved to describe this master. */
>  	master->maxdevs = CONF_STATUS0_DEVS_NUM(val);
>  	master->free_rr_slots = GENMASK(master->maxdevs, 1);
> +	master->caps.ibirfifodepth = CONF_STATUS0_IBIR_DEPTH(val);
> +	master->caps.cmdrfifodepth = CONF_STATUS0_CMDR_DEPTH(val);
>  
>  	val = readl(master->regs + CONF_STATUS1);
>  	master->caps.cmdfifodepth = CONF_STATUS1_CMD_DEPTH(val);
>  	master->caps.rxfifodepth = CONF_STATUS1_RX_DEPTH(val);
>  	master->caps.txfifodepth = CONF_STATUS1_TX_DEPTH(val);
> -	master->caps.ibirfifodepth = CONF_STATUS0_IBIR_DEPTH(val);
> -	master->caps.cmdrfifodepth = CONF_STATUS0_CMDR_DEPTH(val);
>  
>  	spin_lock_init(&master->ibi.lock);
>  	master->ibi.num_slots = CONF_STATUS1_IBI_HW_RES(val);


Thanks,
Miquèl