On 3/12/21 3:24 AM, Luo Jiaxing wrote: > From: Xingui Yang <yangxin...@huawei.com> > > 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 <yangxin...@huawei.com> > Signed-off-by: Luo Jiaxing <luojiax...@huawei.com> > Reviewed-by: John Garry <john.ga...@huawei.com> > --- > drivers/ata/ahci.c | 5 +++++ > drivers/ata/ahci.h | 1 + > drivers/ata/libahci.c | 5 +++++ > 3 files changed, 11 insertions(+) > > diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c > index 00ba8e5..33192a8 100644 > --- a/drivers/ata/ahci.c > +++ b/drivers/ata/ahci.c > @@ -1772,6 +1772,11 @@ static int ahci_init_one(struct pci_dev *pdev, const > struct pci_device_id *ent) > hpriv->flags |= AHCI_HFLAG_NO_DEVSLP; > > #ifdef CONFIG_ARM64 > + if (pdev->vendor == PCI_VENDOR_ID_HUAWEI && > + pdev->device == 0xa235 && > + pdev->revision < 0x30) > + hpriv->flags |= AHCI_HFLAG_NO_SXS;
Is this controller arm exclusive? -- Jens Axboe
