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[ Upstream commit254923ca87] Change the logic in the restore function to properly handle bank exceptions. The check for exceptions in the saved state should be performed before conducting any other ringstat register checks. If a bank was saved with an exception, the ringstat will have the appropriate rp_halt/rp_exception bits set, causing the driver to exit the restore process with an error. Instead, the restore routine should first check the ringexpstat register, and if any exception was raised, it should stop further checks and return without any error. In other words, if a ring pair is in an exception state at the source, it should be restored the same way at the destination but without raising an error. Even though this approach might lead to losing the exception state during migration, the driver will log the exception from the saved state during the restore process. Signed-off-by: Svyatoslav Pankratov <svyatoslav.pankratov@intel.com> Fixes:bbfdde7d19("crypto: qat - add bank save and restore flows") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org>