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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-01-06 19:20:49 +0300
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-01-06 19:20:49 +0300
commit5b31f855f10d0053e738baa6d91fb6a3fad35119 (patch)
treebdd8125faf6e4b8baf37d86270389b4d6f62f37d /drivers/ide/umc8672.c
parentefe0397eef544ac4bcca23d39aa8d5db154952e0 (diff)
downloadlinux-5b31f855f10d0053e738baa6d91fb6a3fad35119.tar.xz
ide: use lock bitops for ports serialization (v2)
* Add ->host_busy field to struct ide_host and use it's first bit together with lock bitops to provide new ports serialization method. * Convert core IDE code to use new ide_[un]lock_host() helpers. This removes the need for taking hwgroup->lock if host is already busy on serialized hosts and makes it possible to merge ide_hwgroup_t into ide_hwif_t (done in the later patch). * Remove no longer needed ide_hwgroup_t.busy and ide_[un]lock_hwgroup(). * Update do_ide_request() documentation. v2: * ide_release_lock() should be called inside IDE_HFLAG_SERIALIZE check. * Add ide_hwif_t.busy flag and ide_[un]lock_port() for serializing devices on a port. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/umc8672.c')
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