s390/ap: add error response code field for ap queue devices

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On AP instruction failures the last response code is now
kept in the struct ap_queue. There is also a new sysfs
attribute showing this field (enabled only on debug kernels).

Also slight rework of the AP_DBF macros to get some more
content into one debug feature message line.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Harald Freudenberger 2020-07-02 15:56:15 +02:00 • committed by Vasily Gorbik

parent 0b641cbd24

commit 2ea2a6099a

4 changed files with 101 additions and 26 deletions

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40

drivers/s390/crypto/ap_bus.c

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1

drivers/s390/crypto/ap_bus.h

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8

drivers/s390/crypto/ap_debug.h

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64

drivers/s390/crypto/ap_queue.c

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