iommu/amd: Clarify AMD IOMMUv2 initialization messages

commit 717e88aad37befedfd531378b632e794e24e9afb upstream.

The messages printed on the initialization of the AMD IOMMUv2 driver
have caused some confusion in the past. Clarify the messages to lower
the confusion in the future.

Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20211123105507.7654-3-joro@8bytes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c
index a9e5682..a45c553 100644 (file)
--- a/drivers/iommu/amd/iommu_v2.c
+++ b/drivers/iommu/amd/iommu_v2.c
@@ -928,10 +928,8 @@ static int __init amd_iommu_v2_init(void)
 {
        int ret;
 
-       pr_info("AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>\n");
-
        if (!amd_iommu_v2_supported()) {
-               pr_info("AMD IOMMUv2 functionality not available on this system\n");
+               pr_info("AMD IOMMUv2 functionality not available on this system - This is not a bug.\n");
                /*
                 * Load anyway to provide the symbols to other modules
                 * which may use AMD IOMMUv2 optionally.
@@ -946,6 +944,8 @@ static int __init amd_iommu_v2_init(void)
 
        amd_iommu_register_ppr_notifier(&ppr_nb);
 
+       pr_info("AMD IOMMUv2 loaded and initialized\n");
+
        return 0;
 
 out: