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Date:   Thu, 17 Dec 2020 18:51:52 -0800
From:   Stephen Boyd <>
To:     Doug Anderson <>
Cc:     Mark Brown <>,,
        Akash Asthana <>,
        Roja Rani Yarubandi <>,
        Andy Gross <>,
        Bjorn Andersson <>,
        linux-arm-msm <>,
        LKML <>,
        linux-spi <>
Subject: Re: [PATCH v2 3/4] spi: spi-geni-qcom: Don't try to set CS if an xfer is pending

Quoting Doug Anderson (2020-12-17 13:35:08)
> If we wanted to truly make this driver super robust against ridiculous
> interrupt latencies then, presumably, we could handle the SPI timeout
> ourselves but before timing out we could check to see if the
> interrupts were pending.  Then we could disable our interrupts,
> synchronize our interrupt handler, handle the interrupt directly, and
> then re-enable interrupts.  If we did this then transfers could
> continue to eek their way through even if interrupts were completely
> blocked.  IMO, it's not worth it.  I'm satisfied with not crashing and
> not getting the state machine too out-of-whack.

Ok that's fair. If it's not worth the effort then let's drop this idea.

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