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authorRobin H. Johnson <robbat2@gentoo.org>2013-12-16 09:31:19 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-01-09 12:24:23 -0800
commit1dc58ce4a96460a21c6038f9517ce72ae73cfcc3 (patch)
treebd352f37b775d4e6c3c214482da8e8d61d53fc1c /drivers/ata
parent3d097b15182906eaf121c48697ceda0ab9ddf55e (diff)
downloadlinux-linaro-stable-1dc58ce4a96460a21c6038f9517ce72ae73cfcc3.tar.gz
libata: disable a disk via libata.force params
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@gentoo.org> Signed-off-by: Tejun Heo <tj@kernel.org> 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@linuxfoundation.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index d18ab9015e3e..8cacd1693f03 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6507,6 +6507,7 @@ static int __init ata_parse_force_one(char **cur,
{ "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;