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Commit dc8b4afc authored by Manuel Lauss's avatar Manuel Lauss Committed by Tejun Heo
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ata: ahci: don't mark HotPlugCapable Ports as external/removable 



The HPCP bit is set by bioses for on-board sata ports either because
they think sata is hotplug capable in general or to allow Windows
to display a "device eject" icon on ports which are routed to an
external connector bracket.

However in Redhat Bugzilla #1310682, users report that with kernel 4.4,
where this bit test first appeared, a lot of partitions on sata drives
are now mounted automatically.

This patch should fix redhat and a lot of other distros which
unconditionally automount all devices which have the "removable"
bit set.

Signed-off-by: default avatarManuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Fixes: 8a3e33cf ("ata: ahci: find eSATA ports and flag them as removable" changes userspace behavior)
Link: http://lkml.kernel.org/g/56CF35FA.1070500@redhat.com
Cc: stable@vger.kernel.org #v4.4+
parent d243bed3

drivers/ata/libahci.c

+1 −2
Original line number Diff line number Diff line
@@ -1168,8 +1168,7 @@ static void ahci_port_init(struct device *dev, struct ata_port *ap, 


	/* mark esata ports */

	tmp = readl(port_mmio + PORT_CMD);

	if ((tmp & PORT_CMD_HPCP) ||

	    ((tmp & PORT_CMD_ESP) && (hpriv->cap & HOST_CAP_SXS)))

	if ((tmp & PORT_CMD_ESP) && (hpriv->cap & HOST_CAP_SXS))

		ap->pflags |= ATA_PFLAG_EXTERNAL;

}