Patch "sata_sil: disable trim" has been added to the 3.14-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    sata_sil: disable trim

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     sata_sil-disable-trim.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From d98f1cd0a3b70ea91f1dfda3ac36c3b2e1a4d5e2 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Thu, 26 Nov 2015 12:00:59 -0500
Subject: sata_sil: disable trim

From: Mikulas Patocka <mpatocka@redhat.com>

commit d98f1cd0a3b70ea91f1dfda3ac36c3b2e1a4d5e2 upstream.

When I connect an Intel SSD to SATA SIL controller (PCI ID 1095:3114), any
TRIM command results in I/O errors being reported in the log. There is
other similar error reported with TRIM and the SIL controller:
https://bugs.centos.org/view.php?id=5880

Apparently the controller doesn't support TRIM commands. This patch
disables TRIM support on the SATA SIL controller.

ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata7.00: BMDMA2 stat 0x50001
ata7.00: failed command: DATA SET MANAGEMENT
ata7.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out
         res 51/04:01:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ABRT }
ata7.00: device reported invalid CHS sector 0
sd 8:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 8:0:0:0: [sdb] tag#0 Sense Key : Illegal Request [current] [descriptor]
sd 8:0:0:0: [sdb] tag#0 Add. Sense: Unaligned write command
sd 8:0:0:0: [sdb] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 21 95 88 00 20 00 00 00 00
blk_update_request: I/O error, dev sdb, sector 2200968

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -631,6 +631,9 @@ static void sil_dev_config(struct ata_de
 	unsigned int n, quirks = 0;
 	unsigned char model_num[ATA_ID_PROD_LEN + 1];
 
+	/* This controller doesn't support trim */
+	dev->horkage |= ATA_HORKAGE_NOTRIM;
+
 	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
 
 	for (n = 0; sil_blacklist[n].product; n++)


Patches currently in stable-queue which might be from mpatocka@redhat.com are

queue-3.14/sata_sil-disable-trim.patch