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| author | Xingui Yang <yangxingui@huawei.com> | 2021-03-12 11:24:36 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-03-31 16:25:15 +0200 |
| commit | 234e6d2c18f5b080cde874483c4c361f3ae7cffe (patch) | |
| tree | 766fda2214c171419eefbac79030cdd3ba3c402d /drivers/ata/libahci.c | |
| parent | ata: libahci_platform: fix IRQ check (diff) | |
| download | linux-234e6d2c18f5b080cde874483c4c361f3ae7cffe.tar.xz linux-234e6d2c18f5b080cde874483c4c361f3ae7cffe.zip | |
ata: ahci: Disable SXS for Hisilicon Kunpeng920
On Hisilicon Kunpeng920, ESP is set to 1 by default for all ports of
SATA controller. In some scenarios, some ports are not external SATA ports,
and it cause disks connected to these ports to be identified as removable
disks. So disable the SXS capability on the software side to prevent users
from mistakenly considering non-removable disks as removable disks and
performing related operations.
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1615544676-61926-1-git-send-email-luojiaxing@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/ata/libahci.c')
| -rw-r--r-- | drivers/ata/libahci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index ea5bf5f4cbed..fec2e9754aed 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -493,6 +493,11 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv) cap |= HOST_CAP_ALPM; } + if ((cap & HOST_CAP_SXS) && (hpriv->flags & AHCI_HFLAG_NO_SXS)) { + dev_info(dev, "controller does not support SXS, disabling CAP_SXS\n"); + cap &= ~HOST_CAP_SXS; + } + if (hpriv->force_port_map && port_map != hpriv->force_port_map) { dev_info(dev, "forcing port_map 0x%x -> 0x%x\n", port_map, hpriv->force_port_map); |