linux-toradex.git/drivers/s390/block, branch v3.9.2

s390/scm_blk: fix error return code in scm_blk_init()

2013-03-21T12:35:38+00:00

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

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

s390/scm_block: fix printk format string

2013-03-21T12:35:37+00:00

Use hex digits when referring to scm addresses.

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

s390/scm: process availability

2013-03-07T08:52:24+00:00

Let the bus code process scm availability information and
notify scm device drivers about the new state.

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

s390/scm_blk: suspend writes

2013-03-07T08:52:23+00:00

Stop writing to scm after certain error conditions such as a concurrent
firmware upgrade. Resume to normal state once scm_blk_set_available is
called (due to an scm availability notification).

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

s390/scm_drv: extend notify callback

2013-03-07T08:52:21+00:00

Extend the notify callback of scm_driver by an event parameter
to allow to distinguish between different notifications.

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

s390/scm_blk: fix request number accounting

2013-03-07T08:52:20+00:00

If a block device driver cannot fetch all requests from the blocklayer
it's in his responsibility to call the request function at a later time.
Normally this would be done after the next irq for the underlying device
is handled. However in situations where we have no outstanding request
we have to schedule the request function for a later time.

This is determined using an internal counter of requests issued to the
hardware.

In some cases where we give a request back to the block layer unhandled
the number of queued requests was not adjusted. Fix this class of
failures by adjusting queued_requests in all functions used to give
a request back to the block layer.

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

s390/dasd: fix unresponsive device after all channel paths were lost

2013-02-28T08:37:07+00:00

Failfast bit was set incorrectly.
Use set_bit to enable failfast.

Reviewed-by: Stefan Weinhuber 
Signed-off-by: Stefan Haberland 
Signed-off-by: Martin Schwidefsky

dasd: fix sysfs cleanup in dasd_generic_remove

2013-02-14T14:55:17+00:00

When the DASD devices are detached from the driver, then the
dasd_generic_remove function is called. One of the things this
function should do is to remove the DASD specific sysfs attributes,
but this is not done in all cases. This is likely to cause an oops
when at a later point sysfs stumbles over the stale pointers. In
particular this happens when when the modules are unloaded and loaded
again.

Signed-off-by: Stefan Weinhuber 
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/scm: use inline dummy functions

2013-02-14T14:55:09+00:00

Convert the defines for the !CONFIG_SCM* stuff to static inline
functions.

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