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authorSebastian Ott <sebott@linux.vnet.ibm.com>2008-12-25 13:39:13 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-25 13:39:10 +0100
commit13952ec12dfeea793ff83c2a96139ed57eb0b897 (patch)
tree3311df62a1794bf95f78b2c57f25f0a79dc84523 /init/do_mounts_initrd.c
parentcdb912a40df8b8507ab60b3d52f9980c0ba1f44d (diff)
[S390] cio: introduce cio_commit_config
To change the configuration of a subchannel we alter the modifiable bits of the subchannel's schib field and issue a modify subchannel. There can be the case that not all changes were applied -or worse- quietly overwritten by the hardware. With the next store subchannel we obtain the current state of the hardware but lose our target configuration. With this patch we introduce a subchannel_config structure which contains the target subchannel configuration. Additionally the msch wrapper cio_modify is replaced with cio_commit_config which copies the desired changes to a temporary schib. msch is then called with the temporary schib. This schib is only written back to the subchannel if all changes were applied. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'init/do_mounts_initrd.c')
0 files changed, 0 insertions, 0 deletions