linux.git/drivers/s390/cio/css.c, branch v3.13

s390/cio: fix unlocked access of global bitmap

2013-08-30T06:57:22+00:00

Access to the slow_subchannel_set has to be secured via the
slow_subchannel_lock.

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390: replace strict_strtoul() with kstrtoul()

2013-08-22T10:20:00+00:00

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.

Signed-off-by: Jingoo Han 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/css: move subchannel lock allocation

2013-04-17T12:07:34+00:00

cio_validate_subchannel is used to do some basic checks to find out
if it's worth to further investigate a subchannel. Move the allocation
and initialization of the subchannels locks to css_alloc_subchannel.

Clean up the functions involved while at it.

Reviewed-by: Peter Oberparleiter 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390/css: remove unused function definitions

2013-04-17T12:07:33+00:00

Make css_probe_device static and remove an unimplemented prototype.

Reviewed-by: Peter Oberparleiter 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390/css: introduce cio_register_early_subchannels

2013-04-17T12:07:32+00:00

Use cio_register_early_subchannels to register early subchannels
which are already in use. Call this function before we do the
actual subchannel scanning loop. This helps us to get rid of some
more special cases regarding the console subchannel.

Reviewed-by: Peter Oberparleiter 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390/cio: get rid of static console subchannel

2013-04-17T12:07:32+00:00

Remove the static console subchannel (and friends) and use dynamic
allocation for these structures. With this change the console
subchanel is treated (mostly) like any other subchannel and we can
remove some special cases.

Reviewed-by: Peter Oberparleiter 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390/cio: split subchannel registration

2013-04-17T12:07:31+00:00

Split the subchannel registration in device_initialize and device_add
and move the initialization part inside the allocation function. With
this change we can use refcounting during the complete lifespan of a
subchannel which is important for devices where we do the actually
registration at a later time.

Reviewed-by: Peter Oberparleiter 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

s390/cio: collect format 1 channel-path description data

2013-04-17T12:07:26+00:00

Collect format 1 channel-path description data for each CHPID
and update the information in one place.

Reviewed-by: Sebastian Ott 
Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky

s390/time: rename tod clock access functions

2013-02-14T14:55:10+00:00

Fix name clash with some common code device drivers and add "tod"
to all tod clock access function names.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/css: stop stsch loop after cc 3

2012-10-18T15:50:08+00:00

Receiving cc=3 from store subchannel means 2 things:
* the subchannel is not provided
* there are no further subchannels in this subchannel set

With this patch we abort the store subchannel loop after cc=3 (or an
exception) and clear the subsequent bits in the subchannel id set.

Reported-by: Cornelia Huck 
Signed-off-by: Sebastian Ott 
Acked-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky