This is a note to let you know that I've just added the patch titled
libata: disable a disk via libata.force params
to the 3.12-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:
libata-disable-a-disk-via-libata.force-params.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b8bd6dc36186fe99afa7b73e9e2d9a98ad5c4865 Mon Sep 17 00:00:00 2001
From: "Robin H. Johnson" <robbat2@xxxxxxxxxx>
Date: Mon, 16 Dec 2013 09:31:19 -0800
Subject: libata: disable a disk via libata.force params
From: "Robin H. Johnson" <robbat2@xxxxxxxxxx>
commit b8bd6dc36186fe99afa7b73e9e2d9a98ad5c4865 upstream.
A user on StackExchange had a failing SSD that's soldered directly
onto the motherboard of his system. The BIOS does not give any option
to disable it at all, so he can't just hide it from the OS via the
BIOS.
The old IDE layer had hdX=noprobe override for situations like this,
but that was never ported to the libata layer.
This patch implements a disable flag for libata.force.
Example use:
libata.force=2.0:disable
[v2 of the patch, removed the nodisable flag per Tejun Heo]
Signed-off-by: Robin H. Johnson <robbat2@xxxxxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Link: http://unix.stackexchange.com/questions/102648/how-to-tell-linux-kernel-3-0-to-completely-ignore-a-failing-disk
Link: http://askubuntu.com/questions/352836/how-can-i-tell-linux-kernel-to-completely-ignore-a-disk-as-if-it-was-not-even-co
Link: http://superuser.com/questions/599333/how-to-disable-kernel-probing-for-drive
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/kernel-parameters.txt | 2 ++
drivers/ata/libata-core.c | 1 +
2 files changed, 3 insertions(+)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1515,6 +1515,8 @@ bytes respectively. Such letter suffixes
* atapi_dmadir: Enable ATAPI DMADIR bridge support
+ * disable: Disable this device.
+
If there are multiple matching configurations changing
the same attribute, the last one is used.
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6523,6 +6523,7 @@ static int __init ata_parse_force_one(ch
{ "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
{ "rstonce", .lflags = ATA_LFLAG_RST_ONCE },
{ "atapi_dmadir", .horkage_on = ATA_HORKAGE_ATAPI_DMADIR },
+ { "disable", .horkage_on = ATA_HORKAGE_DISABLE },
};
char *start = *cur, *p = *cur;
char *id, *val, *endp;
Patches currently in stable-queue which might be from robbat2@xxxxxxxxxx are
queue-3.12/libata-disable-a-disk-via-libata.force-params.patch
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