I2O subsystem fixing and cleanup for 2.6

Hello,

here are 5 patches, which cleanup the I2O subsystem in 2.6.

The patches are as follows:
- i2o-config-clean.patch
* Changes the formating of the header in i2o_config.c

- i2o-passthru.patch
* Add a pass-thru ioctl to i2o_config, which is needed to work with the Adaptec management software.

- i2o_block-cleanup.patch
* more than 3 "visible" disks (hda, hdb, hdc, hdd) lead to kernel panics.
* removes some unused code with partitions.
* I2O_LOCK was often called with the addresses of the controller, and not with the address of the device. Fixed.
* the cleanup function for gendisk (del_gendisk) doesn't work if the queue is shared between different devices. To workaround the queue is removed before.
* redundant code removed in module initialization and remove, use i2ob_new_device and i2ob_del_device instead.
* removed atomic_t queue_depth
* removed unnecessary and bogus code for queue handling

- i2o-64-bit-fix.patch
* provides i2o_context_list_*() functions, which maps 64-bit pointers to 32-bit context id's in a dynamic list. On 32-bit systems the functions are replaced with a static inline.
* i2o_scsi now uses the i2o_context_list_*() functions for transaction context, and therefore now work on 64-bit systems too.

- i2o-makefile-cleanup.patch
* The Kconfig and Makefile in drivers/message/i2o still got a CONFIG_I2O_PCI entry, which is not used anymore. This one is replaced by a CONFIG_I2O_CONFIG entry, which now builds the i2o_config module.

Already posted the first 4 patches to linux-scsi with request for review, but expect of the i2o-passthru.patch there where no complains. And the request for using the SG_IO in i2o-passthru.patch isn't possible at the moment, because it is a char device node.

If you have any questions / problems, please let me know.

Best regards,

Markus Lidel
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Markus Lidel (Senior IT Consultant)

Shadow Connect GmbH
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