Commit 762b296b authored by Kai Ye's avatar Kai Ye Committed by Greg Kroah-Hartman
Browse files

uacce: add print information if not enable sva 



Add print information necessary if user not enable sva.

Signed-off-by: default avatarKai Ye <yekai13@huawei.com>
Link: https://lore.kernel.org/r/1623233345-8765-1-git-send-email-yekai13@huawei.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 75041120

drivers/misc/uacce/uacce.c

+9 −2
Original line number Diff line number Diff line
@@ -387,15 +387,22 @@ static void uacce_release(struct device *dev) 


static unsigned int uacce_enable_sva(struct device *parent, unsigned int flags)

{

	int ret;



	if (!(flags & UACCE_DEV_SVA))

		return flags;



	flags &= ~UACCE_DEV_SVA;



	if (iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_IOPF))

	ret = iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_IOPF);

	if (ret) {

		dev_err(parent, "failed to enable IOPF feature! ret = %pe\n", ERR_PTR(ret));

		return flags;

	}



	if (iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_SVA)) {

	ret = iommu_dev_enable_feature(parent, IOMMU_DEV_FEAT_SVA);

	if (ret) {

		dev_err(parent, "failed to enable SVA feature! ret = %pe\n", ERR_PTR(ret));

		iommu_dev_disable_feature(parent, IOMMU_DEV_FEAT_IOPF);

		return flags;

	}