Commit fedd27b3 authored by Zhou Guanghui's avatar Zhou Guanghui Committed by Yang Yingliang
Browse files

arm64/ascend: fix memleak when remove svm 



ascend inclusion
category: bugfix
bugzilla: NA
CVE: NA

-------------------------------------------------

shutdown Shared Virtual Addressing for a device which initialized
by iommu_sva_device_init()

Signed-off-by: default avatarZhou Guanghui <zhouguanghui1@huawei.com>
Reviewed-by: default avatarHanjun Guo <guohanjun@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parent c947dfcf

drivers/char/svm.c

+7 −0
Original line number Diff line number Diff line
@@ -246,6 +246,7 @@ static int svm_remove_core(struct device *dev, void *data) 
	struct core_device *cdev = to_core_device(dev);



	if (!cdev->smmu_bypass) {

		iommu_sva_device_shutdown(dev);

		iommu_detach_group(cdev->domain, cdev->group);

		iommu_group_put(cdev->group);

		iommu_domain_free(cdev->domain);
@@ -1769,6 +1770,11 @@ static int svm_device_remove(struct platform_device *pdev) 
	return 0;

}



static void svm_device_shutdown(struct platform_device *pdev)

{

	svm_device_remove(pdev);

}



static const struct acpi_device_id svm_acpi_match[] = {

	{ "HSVM1980", 0},

	{ }
@@ -1785,6 +1791,7 @@ MODULE_DEVICE_TABLE(of, svm_of_match); 
static struct platform_driver svm_driver = {

	.probe	=	svm_device_probe,

	.remove	=	svm_device_remove,

	.shutdown =	svm_device_shutdown,

	.driver	=	{

		.name = SVM_DEVICE_NAME,

		.acpi_match_table = ACPI_PTR(svm_acpi_match),