- 12 Oct, 2007 5 commits
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Cornelia Huck authored
There was the possibilty that an action like ccw_device_set_offline() triggered by a device gone machine check might trigger a not oper event. Unfortunately, this could lead to the situation that we tried to unregister a subchannel twice: Once from the slow path evaluation, and once via the not oper event. Fix this by always using the same mechanism (css_schedule_eval()) for triggering the unregister. This makes sure that unregistration will only be done once. As an added bonus, it also simplyfies the code. Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Cornelia Huck authored
Don't forget to set dev->groups for early ccw devices like the console device so the default attributes are created. Signed-off-by:
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Cornelia Huck authored
Disable channel measurements for all ccw devices via the ccw bus's shutdown method. Clear residual cmf related information that may be in the schib when setting up a new subchannel. Signed-off-by:
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Cornelia Huck authored
Introduce a shutdown method for the ccw bus that calls the driver specific shutdown method in struct ccw_driver. Switch zfcp to the new ccw_driver shutdown method. Signed-off-by:
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Cornelia Huck authored
Comment a bunch of function in docbook style and convert existing comments on structures to docbook. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com>
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- 22 Aug, 2007 1 commit
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Cornelia Huck authored
Signed-off-by:
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- 27 Jul, 2007 1 commit
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Cornelia Huck authored
- Remove unneeded messages. - Move some messages into the debug feature. - Use dev_* where appropriate. - Use "cio: " prefix consistently. Signed-off-by:
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- 17 Jul, 2007 1 commit
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Cornelia Huck authored
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- 31 May, 2007 1 commit
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Cornelia Huck authored
We can't deregister disconnected and orphaned devices directly from the online attribute's store method, but must take a detour. Signed-off-by:
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- 10 May, 2007 1 commit
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Cornelia Huck authored
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- 27 Apr, 2007 6 commits
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Cornelia Huck authored
We often have the situation that we register a subchannel and start device recognition, only to find out that the device is not usable after all, which triggers an unregister of the subchannel. This often happens on hundreds of subchannels on a LPAR, leading to a storm of events which aren't of any use. Therefore, use uevent_suppress to delay the KOBJ_ADD uevent for a subchannel until we know that its ccw_device is to be registered. Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Cornelia Huck authored
We used to unregister ccw devices not directly from the I/O subchannel remove function in order to avoid lifelocks on the css bus semaphore. This semaphore is gone, and there is no reason to not unregister the ccw device directly (it is even better since it is more in keeping with the goal of immediate disconnect). Signed-off-by:
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Cornelia Huck authored
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Peter Oberparleiter authored
Ensure that channel-path related subchannel data is only retrieved and used when it is valid and that it is updated when it may have changed. Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Convert ccw_uevent to use add_uevent_var and adapt snprint_alias. Signed-off-by:
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Cornelia Huck authored
Detangle the online_store code and make it more readable. Signed-off-by:
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- 05 Feb, 2007 3 commits
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Heiko Carstens authored
Signed-off-by:
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Cornelia Huck authored
Since ssd_info is now available before the subchannel is registered, we don't need to check whether it is available. Signed-off-by:
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Heiko Carstens authored
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- 08 Dec, 2006 5 commits
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Cornelia Huck authored
Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Cornelia Huck authored
- create a 'pseudo_subchannel' per channel subsystem (the 'orphanage') - use the orphanage as a shelter for ccw_devices that can't remain on the same subchannel Signed-off-by:
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Cornelia Huck authored
Convert the subchannel lock to a pointer to a lock. Needed for the dynamic subchannel mapping patch. Signed-off-by:
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Cornelia Huck authored
- Move adding subchannel attributes to css_register_subchannel(). - Don't call device_trigger_reprobe() for non-operational devices. - Introduce io_subchannel_create_ccwdev(). Signed-off-by:
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Martin Schwidefsky authored
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- 04 Dec, 2006 2 commits
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Cornelia Huck authored
In io_subchannel_register(), it is better to just reprobe the current device if it hasn't a driver yet than to rescan the whole bus. Signed-off-by:
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Cornelia Huck authored
If I/O was running on a just varied off chpid, it will be terminated. If this was a common I/O layer internal I/O, it needs to be retried. Signed-off-by:
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- 27 Oct, 2006 1 commit
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Cornelia Huck authored
ccw_device_register() is only called from io_subchannel_register() and io_subchannel_probe() and will never be called for possible non-io subchannels. Signed-off-by:
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- 11 Oct, 2006 2 commits
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Cornelia Huck authored
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Cornelia Huck authored
Use the proper structures to identify device and subchannel. Change get_disc_ccwdev_by_devno() to get_disc_ccwdev_by_dev_id(). Signed-off-by:
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- 20 Sep, 2006 1 commit
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Peter Oberparleiter authored
Add the MODALIAS environment variable for ccw bus uevents. Signed-off-by:
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- 30 Aug, 2006 1 commit
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Heiko Carstens authored
Use different kind of assignment to make sure gcc doesn't create code that creates temp variables on the stack, assigns values to it and copies the content of the whole temp variable to the destination. This reduces stack usage of e.g. ccwgroup_driver_register from 976 to 48 bytes instead. Signed-off-by:
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- 12 Jul, 2006 2 commits
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Heiko Carstens authored
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Cornelia Huck authored
Add a reg_mutex to prevent unregistering a subchannel before it has been registered. Since 2.6.17, we've seen oopses in kslowcrw when a device is found to be not operational during sense id when doing initial device recognition; it is not clear yet why that particular problem was not (yet) observed with earlier kernels... Signed-off-by:
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- 30 Jun, 2006 1 commit
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Jörn Engel authored
Signed-off-by:
Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by:
Adrian Bunk <bunk@stusta.de>
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- 29 Jun, 2006 1 commit
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Peter Oberparleiter authored
Changes in the DASD driver require an asynchronous implementation of the subchannel reprobe loop. This loop was so far only used by the blacklisting mechanism but is now available to all CCW device drivers. Signed-off-by:
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- 24 Mar, 2006 1 commit
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Eric Sesterhenn authored
Convert all kmalloc + memset sequences in drivers/s390 to kzalloc usage. Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- 17 Feb, 2006 1 commit
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Cornelia Huck authored
Fix assignment instead of check in ccw_device_set_online(). Also remove unneeded assignment in ccw_device_do_sense(). Signed-off-by:
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- 01 Feb, 2006 3 commits
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Cornelia Huck authored
Fix modalias for ccw devices: cu_type should be in capitals as well. Signed-off-by:
Cornelia Huck <cohuck@de.ibm.com> Signed-off-by:
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Peter Oberparleiter authored
The return code of ccw_device_probe_console() is not properly handled. It should only return a valid ccw device pointer or a error value converted by ERR_PTR. Fix the console driver code to check with IS_ERR instead against NULL. Signed-off-by:
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Heiko Carstens authored
- Remove all CVS generated information like e.g. revision IDs from drivers/s390 and include/asm-s390 (none present in arch/s390). - Add newline at end of arch/s390/lib/Makefile to avoid diff message. Acked-by:
Andreas Herrmann <aherrman@de.ibm.com> Acked-by:
Frank Pavlic <pavlic@de.ibm.com> Signed-off-by:
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