Unknown flags should be EOPNOTSUPP, only zero flags is EINVAL. Flags is
actually the rereg action to perform.
The checking of the start/hca_va/etc is also redundant and ib_umem_get()
does these checks and returns proper error codes.
Fixes:
7e6edb9b2e0b ("IB/core: Add user MR re-registration support")
Link: https://lore.kernel.org/r/20201130075839.278575-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
if (ret)
return ret;
- if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
+ if (!cmd.flags)
return -EINVAL;
+ if (cmd.flags & ~IB_MR_REREG_SUPPORTED)
+ return -EOPNOTSUPP;
+
if ((cmd.flags & IB_MR_REREG_TRANS) &&
- (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
- (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
- return -EINVAL;
+ (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
+ return -EINVAL;
uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
if (IS_ERR(uobj))