xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[S390] cio: make steal lock procedure more robust

Browse Source 
An Unconditional Reserve + Release operation (steal lock) for a
boxed device may fail when encountering special error cases
(e.g. unit checks or path errors). Fix this by using the more
robust ccw_request infrastructure for performing the steal lock
CCW program.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter
2009-12-07 12:51:32 +01:00
committed by Martin Schwidefsky
parent 52ef0608e3
commit d7d12ef2be
4 changed files with 134 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/s390/cio/device.h
View File

@@ -28,6 +28,7 @@ enum dev_state {
DEV_STATE_DISCONNECTED_SENSE_ID,
DEV_STATE_CMFCHANGE,
DEV_STATE_CMFUPDATE,
DEV_STATE_STEAL_LOCK,
/* last element! */
NR_DEV_STATES
};
@@ -116,6 +117,9 @@ void ccw_device_verify_done(struct ccw_device *, int);
void ccw_device_disband_start(struct ccw_device *);
void ccw_device_disband_done(struct ccw_device *, int);
void ccw_device_stlck_start(struct ccw_device *, void *, void *, void *);
void ccw_device_stlck_done(struct ccw_device *, void *, int);
int ccw_device_call_handler(struct ccw_device *);
int ccw_device_stlck(struct ccw_device *);