linux-kernel - [PATCH 4.9 21/36] libata: Apply NOLPM quirk for SanDisk SD7UB3Q*G1001 SSDs

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Message-Id: <20180514064805.921745797@linuxfoundation.org>
Date:   Mon, 14 May 2018 08:48:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Richard W.M. Jones" <rjones@...hat.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Tejun Heo <tj@...nel.org>
Subject: [PATCH 4.9 21/36] libata: Apply NOLPM quirk for SanDisk SD7UB3Q*G1001 SSDs

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hans de Goede <hdegoede@...hat.com>

commit 184add2ca23ce5edcac0ab9c3b9be13f91e7b567 upstream.

Richard Jones has reported that using med_power_with_dipm on a T450s
with a Sandisk SD7UB3Q256G1001 SSD (firmware version X2180501) is
causing the machine to hang.

Switching the LPM to max_performance fixes this, so it seems that
this Sandisk SSD does not handle LPM well.

Note in the past there have been bug-reports about the following
Sandisk models not working with min_power, so we may need to extend
the quirk list in the future: name - firmware
Sandisk SD6SB2M512G1022I   - X210400
Sandisk SD6PP4M-256G-1006  - A200906

Cc: stable@...r.kernel.org
Cc: Richard W.M. Jones <rjones@...hat.com>
Reported-and-tested-by: Richard W.M. Jones <rjones@...hat.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/ata/libata-core.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4422,6 +4422,9 @@ static const struct ata_blacklist_entry
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
 						ATA_HORKAGE_NOLPM, },

+	/* Sandisk devices which are known to not handle LPM well */
+	{ "SanDisk SD7UB3Q*G1001",	NULL,	ATA_HORKAGE_NOLPM, },
+
 	/* devices that don't properly handle queued TRIM commands */
 	{ "Micron_M500_*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM, },