Comment 135 for bug 1810239

I believe I am affected by the same bug with the Marvell 88SE9120 controller on an ASRock 990FX Extreme 4 motherboard.
Although there are no DMAR errors in dmesg, when AMD's IOMMU is enabled in the bios I get the following a couple of times, before it gives up

[ 117.616423] ata9: hard resetting link
[ 117.632972] AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.1 domain=0x0000 address=0x0000000000020440 flags=0x0070]
[ 117.632982] AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.1 domain=0x0000 address=0x0000000000020450 flags=0x0070]
[ 118.340472] AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.1 domain=0x0000 address=0x0000000000020000 flags=0x0050]
[ 122.616621] ata9: softreset failed (1st FIS failed)
[ 122.616632] ata9: reset failed, giving up
[ 122.616640] ata9: EH complete

Once the controller's dev ID was added to drivers/pci/quirks.c everything worked as expected in kernel 4.1 from git.kernel.org (23b7776290b10297fe2cae0fb5f166a4f2c68121)

[ 1520.100391] ata9: hard resetting link
[ 1526.038156] ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 330)
[ 1526.044554] ata9.00: ATA-7: SAMSUNG HD502IJ, 1AA01112, max UDMA7
[ 1526.044559] ata9.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
[ 1526.050996] ata9.00: configured for UDMA/133
[ 1526.051007] ata9: EH complete

And here is the patch

--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3589,6 +3589,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
     quirk_dma_func1_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
+ quirk_dma_func1_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
     quirk_dma_func1_alias);
 /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */

Could this device id be added to the list of affected devices?