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ata: ahci: append new hflag AHCI_HFLAG_NO_FBS

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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>
This commit is contained in:
Kefeng Wang 2014-05-14 14:13:40 +08:00 committed by Tejun Heo
parent 58eb8cd565
commit 888d91a08f
2 changed files with 6 additions and 0 deletions
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1
drivers/ata/ahci.h
View File

@ -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 */

5
drivers/ata/libahci.c
View File

@ -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);