15 Aug
2023
15 Aug
'23
4:32 p.m.
On Fri, Aug 11, 2023 at 12:15:00AM -0700, Yi Liu wrote:
+static int iommufd_get_hw_info(struct iommufd_ucmd *ucmd) +{
- struct iommu_hw_info *cmd = ucmd->cmd;
- unsigned int length = cmd->data_len;
- struct iommufd_device *idev;
- void __user *user_ptr;
- u32 hw_info_type;
- int rc = 0;
- if (cmd->flags || cmd->__reserved || !cmd->data_len)
return -EOPNOTSUPP;
Is there a reason to block 0 data_len? I think this should work. The code looks OK?
Jason