32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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From 656ccd6ac62714b11b163b6eb62370a78c7bc808 Mon Sep 17 00:00:00 2001
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From: pcm720 <pcm720@users.noreply.github.com>
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Date: Mon, 20 Jul 2020 20:33:26 +0300
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Subject: [PATCH] drivers: nvme: address NVMe instability for Pinebook Pro
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Apparently, some NVMe SSDs on Pinebook Pro don't become ready before timeout specified in drive's CAP register expires.
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The workaround is to increase timeout. Tested and confirmed to work on Intel 660p.
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---
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drivers/nvme/nvme.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c
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index fc64d93ab8..138b9f8fbb 100644
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--- a/drivers/nvme/nvme.c
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+++ b/drivers/nvme/nvme.c
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@@ -61,6 +61,12 @@ static int nvme_wait_ready(struct nvme_dev *dev, bool enabled)
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/* Timeout field in the CAP register is in 500 millisecond units */
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timeout = NVME_CAP_TIMEOUT(dev->cap) * 500;
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+
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+ #ifdef CONFIG_TARGET_PINEBOOK_PRO_RK3399
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+ /* Some NVMe SSDs on Pinebook Pro don't become ready before timeout expires.
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+ Workaround: increase timeout */
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+ timeout *= 2;
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+ #endif
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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--
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2.27.0
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