powerpc/xive: Fix endian conversion size

stable inclusion
from stable-v6.6.2
commit ad0c8f4937327ba10ff71542a4d4994e75f9abf1
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ad0c8f4937327ba10ff71542a4d4994e75f9abf1

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

[ Upstream commit ff7a60ab1e065257a0e467c13b519f4debcd7fcf ]

Sparse reports a size mismatch in the endian swap. The Opal
implementation[1] passes the value as a __be64, and the receiving
variable out_qsize is a u64, so the use of be32_to_cpu() appears to be
an error.

[1]: https://github.com/open-power/skiboot/blob/80e2b1dc73/hw/xive.c#L3854



Fixes: 88ec6b93 ("powerpc/xive: add OPAL extensions for the XIVE native exploitation support")
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231011053711.93427-2-bgray@linux.ibm.com


Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>