Re: [PATCH] scsi: ufs: core: fix devfreq deadlocks

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On Tue, Jan 03 2023 at 13:45 -0800, Bart Van Assche wrote:
On 12/22/22 02:21, Johan Hovold wrote:
+	/* Enable Write Booster if we have scaled up else disable it */
+	if (ufshcd_enable_wb_if_scaling_up(hba))
+		ufshcd_wb_toggle(hba, scale_up);

Hi Asutosh,

This patch is the second complaint about the mechanism that toggles the WriteBooster during clock scaling. Can this mechanism be removed entirely?

I think this commit introduced that mechanism: 3d17b9b5ab11 ("scsi: ufs: Add write booster feature support"; v5.8).

Thanks,

Bart.

Hello Bart,
Load based toggling of WB seemed fine to me then.
I haven't thought about another method to toggle WriteBooster yet.
Let me see if I can come up with something.
IMT if you have a mechanism in mind, please let me know.

-asd





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