Commit 888d91a0 authored May 14, 2014 by Kefeng Wang Committed by Tejun Heo May 14, 2014

ata: ahci: append new hflag AHCI_HFLAG_NO_FBS



Append AHCI_HFLAG_NO_FBS to force turning off FBS flag.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent 58eb8cd5

drivers/ata/ahci.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -235,6 +235,7 @@ enum {
		port start (wait until
		error-handling stage) */
		AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */
		AHCI_HFLAG_NO_FBS = (1 << 17), /* no FBS */

		/* ap->flags bits */

drivers/ata/libahci.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -457,6 +457,11 @@ void ahci_save_initial_config(struct device *dev,
		cap \|= HOST_CAP_FBS;
		}

		if ((cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_NO_FBS)) {
		dev_info(dev, "controller can't do FBS, turning off CAP_FBS\n");
		cap &= ~HOST_CAP_FBS;
		}

		if (force_port_map && port_map != force_port_map) {
		dev_info(dev, "forcing port_map 0x%x -> 0x%x\n",
		port_map, force_port_map);