linux-kernel - Re: [PATCH v2 2/8] spi: rockchip: Wait for STB status in slave mode tx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20210505075935.GB10432@pengutronix.de>
Date:   Wed, 5 May 2021 09:59:35 +0200
From:   Sascha Hauer <sha@...gutronix.de>
To:     Jon Lin <jon.lin@...k-chips.com>
Cc:     broonie@...nel.org, heiko@...ech.de, linux-spi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...il.dk
Subject: Re: [PATCH v2 2/8] spi: rockchip: Wait for STB status in slave mode
 tx_xfer

Hi Jon Lin,

On Tue, Apr 27, 2021 at 03:37:27PM +0800, Jon Lin wrote:
> +static inline void wait_for_tx_idle(struct rockchip_spi *rs, bool slave_mode)
>  {
>  	unsigned long timeout = jiffies + msecs_to_jiffies(5);
>  
>  	do {
> -		if (!(readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY))
> -			return;
> +		if (slave_mode) {
> +			if (!(readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_SLAVE_TX_BUSY) &&
> +			    !((readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY))
> +				return;

This doesn't compile. There is one opening brace too much before the
readl_relaxed.

Regards,
 Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |