[PATCH] media: cx23885: reset DMA on AMD Renior/Cezanne IOMMU due to RiSC engine stall

[PATCH] media: cx23885: reset DMA on AMD Renior/Cezanne IOMMU due to RiSC engine stall

[Daniel Kruse]

Hi everybody,

MythTv is unable to scan channels with APUs with the Renior IOMMU that is also contained in the Cezanne line of APUs.  This issue was discovered on the 5.15 version the kernel.  This patch adds the IOMMU PCI ID to the broken_dev_id array.  This patch was developed with 5.19 of the media_tree repo.

Checkpatch results:
./scripts/checkpatch.pl -f cx23885-core.patch 
total: 0 errors, 0 warnings, 14 lines checked

cx23885-core.patch has no obvious style problems and is ready for submission.

Signed-off-by: Daniel Lee Kruse <daniel.lee.kruse@proton.me>

---

diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c
index a07b18f2034e..9232a966bcab 100644
--- a/drivers/media/pci/cx23885/cx23885-core.c
+++ b/drivers/media/pci/cx23885/cx23885-core.c
@@ -2086,6 +2086,9 @@ static struct {
        /* 0x1419 is the PCI ID for the IOMMU found on 15h (Models 10h-1fh) family
         */
        { PCI_VENDOR_ID_AMD, 0x1419 },
+       /* 0x1631 is the PCI ID for the IOMMU found on Renoir/Cezanne
+        */
+       { PCI_VENDOR_ID_AMD, 0x1631 },
        /* 0x5a23 is the PCI ID for the IOMMU found on RD890S/RD990
         */
        { PCI_VENDOR_ID_ATI, 0x5a23 },