[S390] cio: remove registered flag from ccw_device_private

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We used to maintain a "registered" flag in our ccw_device_private
structure. This patch removes the "registered" flag and converts
all users of it to device_is_registered which has the exact same
meaning.

Note: The usage the atomic operation test_and_clear_bit is replaced
by the non-atomic if (device_is_registered()) device_del(). This
will not do harm, since we serialize calls to ccw_device_unregister
with a single-threaded workqueue.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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This commit is contained in:

Sebastian Ott 2009-12-07 12:51:33 +01:00 • committed by Martin Schwidefsky

parent d7d12ef2be

commit 7d253b9a1a

2 changed files with 3 additions and 9 deletions

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11

drivers/s390/cio/device.c

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1

drivers/s390/cio/io_sch.h

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