Re: [RFC PATCH v3 1/5] ufs: mcq: Add supporting functions for mcq abort

[John Garry]

On 23/03/2023 09:53, Bao D. Nguyen wrote:
> +static int ufshcd_mcq_poll_register(void __iomem *reg, u32 mask,
> +			u32 val, unsigned long timeout_ms)
> +{
> +	unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
> +	int err = 0;
> +
> +	/* ignore bits that we don't intend to wait on */
> +	val = val & mask;
> +
> +	while ((readl(reg) & mask) != val) {
> +		usleep_range(10, 50);
> +		if (time_after(jiffies, timeout)) {
> +			err = -ETIMEDOUT;
> +			break;
> +		}

This looks just like readl_poll_timeout()

> +	}
> +
> +	return err;
> +}