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s390/zcrypt: fixed domain scanning problem (again)

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Older machines with more then 16 domains need a special check before
PQAP instructions can be processed. With commit 5bc334bff9 this
check was reverted by accident. This patch re-establishes the additional
code needed for checking the extended domains for older machines.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Ingo Tuchscherer 2015-02-02 17:50:17 +01:00 committed by Martin Schwidefsky
parent 5c75a0dac3
commit ea96f78813
1 changed files with 7 additions and 3 deletions
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10
drivers/s390/crypto/ap_bus.c
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@ -1060,9 +1060,13 @@ static inline int ap_test_config_card_id(unsigned int id)
*/
static inline int ap_test_config_domain(unsigned int domain)
{
if (!ap_configuration)
return 1;
return ap_test_config(ap_configuration->aqm, domain);
if (!ap_configuration) /* QCI not supported */
if (domain < 16)
return 1; /* then domains 0...15 are configured */
else
return 0;
else
return ap_test_config(ap_configuration->aqm, domain);
}
/*