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authorBorislav Petkov <petkovbb@googlemail.com>2009-04-18 22:00:42 (GMT)
committerTejun Heo <tj@kernel.org>2009-04-18 22:00:42 (GMT)
commita1df5169f9bf08f6067029bfb840a05e282b1b97 (patch)
treef0ec5f74cc80f15d9d5720aa68997aa307f10dc1 /drivers/i2c
parentcbfd082abfcbed8c57a12636f36e9bead8d6cfc6 (diff)
downloadlinux-a1df5169f9bf08f6067029bfb840a05e282b1b97.tar.xz
ide: add helpers for preparing sense requests
This is in preparation of removing the queueing of a sense request out of the IRQ handler path. Use struct request_sense as a general sense buffer for all ATAPI devices ide-{floppy,tape,cd}. tj: * blk_get_request(__GFP_WAIT) can't be called from do_request() as it can cause deadlock. Converted to use inline struct request and blk_rq_init(). * Added xfer / cdb len selection depending on device type. * All sense prep logics folded into ide_prep_sense() which never fails. * hwif->rq clearing and sense_rq used handling moved into ide_queue_sense_rq(). * blk_rq_map_kern() conversion is moved to later patch. CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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