On 8/18/2023 12:34 PM, Bart Van Assche wrote:

The host driver link startup callback is called indirectly by
ufshcd_probe_hba(). That function applies the auto-hibernation
settings by writing hba->ahit into the auto-hibernation control
register. Simplify the code for disabling auto-hibernation by
setting hba->ahit instead of writing into the auto-hibernation
control register. This patch is part of an effort to move all
auto-hibernation register changes into the UFSHCI driver core.

...

  	/* disable auto H8 */
-	reg = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER);
-	reg = reg & (~UFS_AHIT_AH8ITV_MASK);
-	ufshcd_writel(hba, reg, REG_AUTO_HIBERNATE_IDLE_TIMER);
+	hba->ahit = 0;

The original code only clears the timer value, not the scale.
However, I think it is safe to assume that it meant to clear both.

Reviewed-by: Bao D. Nguyen <redacted>