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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 17:03:12 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-22 17:03:12 -0700 |
commit | 8abfc6e7a45eb74e51904bbae676fae008b11366 (patch) | |
tree | 57d0a24558c0693e3a52e8e756616f6c72def1e9 /drivers/block/ataflop.c | |
parent | e9dd2b6837e26fe202708cce5ea4bb4ee3e3482e (diff) | |
parent | 6362beea8914cbd4630ccde3617d944aeca2d48f (diff) | |
download | blackbird-op-linux-8abfc6e7a45eb74e51904bbae676fae008b11366.tar.gz blackbird-op-linux-8abfc6e7a45eb74e51904bbae676fae008b11366.zip |
Merge branch 'for-2.6.37/drivers' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.37/drivers' of git://git.kernel.dk/linux-2.6-block: (95 commits)
cciss: fix PCI IDs for new Smart Array controllers
drbd: add race-breaker to drbd_go_diskless
drbd: use dynamic_dev_dbg to optionally log uuid changes
dynamic_debug.h: Fix dynamic_dev_dbg() macro if CONFIG_DYNAMIC_DEBUG not set
drbd: cleanup: change "<= 0" to "== 0"
drbd: relax the grace period of the md_sync timer again
drbd: add some more explicit drbd_md_sync
drbd: drop wrong debug asserts, fix recently introduced race
drbd: cleanup useless leftover warn/error printk's
drbd: add explicit drbd_md_sync to drbd_resync_finished
drbd: Do not log an ASSERT for P_OV_REQUEST packets while C_CONNECTED
drbd: fix for possible deadlock on IO error during resync
drbd: fix unlikely access after free and list corruption
drbd: fix for spurious fullsync (uuids rotated too fast)
drbd: allow for explicit resync-finished notifications
drbd: preparation commit, using full state in receive_state()
drbd: drbd_send_ack_dp must not rely on header information
drbd: Fix regression in recv_bm_rle_bits (compressed bitmap)
drbd: Fixed a stupid copy and paste error
drbd: Allow larger values for c-fill-target.
...
Fix up trivial conflict in drivers/block/ataflop.c due to BKL removal
Diffstat (limited to 'drivers/block/ataflop.c')
-rw-r--r-- | drivers/block/ataflop.c | 50 |
1 files changed, 39 insertions, 11 deletions
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index 8c021bb7a991..4e4cc6c828cb 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -80,8 +80,8 @@ #undef DEBUG static DEFINE_MUTEX(ataflop_mutex); -static struct request_queue *floppy_queue; static struct request *fd_request; +static int fdc_queue; /* Disk types: DD, HD, ED */ static struct atari_disk_type { @@ -1392,6 +1392,29 @@ static void setup_req_params( int drive ) ReqTrack, ReqSector, (unsigned long)ReqData )); } +/* + * Round-robin between our available drives, doing one request from each + */ +static struct request *set_next_request(void) +{ + struct request_queue *q; + int old_pos = fdc_queue; + struct request *rq; + + do { + q = unit[fdc_queue].disk->queue; + if (++fdc_queue == FD_MAX_UNITS) + fdc_queue = 0; + if (q) { + rq = blk_fetch_request(q); + if (rq) + break; + } + } while (fdc_queue != old_pos); + + return rq; +} + static void redo_fd_request(void) { @@ -1406,7 +1429,7 @@ static void redo_fd_request(void) repeat: if (!fd_request) { - fd_request = blk_fetch_request(floppy_queue); + fd_request = set_next_request(); if (!fd_request) goto the_end; } @@ -1933,10 +1956,6 @@ static int __init atari_floppy_init (void) PhysTrackBuffer = virt_to_phys(TrackBuffer); BufferDrive = BufferSide = BufferTrack = -1; - floppy_queue = blk_init_queue(do_fd_request, &ataflop_lock); - if (!floppy_queue) - goto Enomem; - for (i = 0; i < FD_MAX_UNITS; i++) { unit[i].track = -1; unit[i].flags = 0; @@ -1945,7 +1964,10 @@ static int __init atari_floppy_init (void) sprintf(unit[i].disk->disk_name, "fd%d", i); unit[i].disk->fops = &floppy_fops; unit[i].disk->private_data = &unit[i]; - unit[i].disk->queue = floppy_queue; + unit[i].disk->queue = blk_init_queue(do_fd_request, + &ataflop_lock); + if (!unit[i].disk->queue) + goto Enomem; set_capacity(unit[i].disk, MAX_DISK_SIZE * 2); add_disk(unit[i].disk); } @@ -1960,10 +1982,14 @@ static int __init atari_floppy_init (void) return 0; Enomem: - while (i--) + while (i--) { + struct request_queue *q = unit[i].disk->queue; + put_disk(unit[i].disk); - if (floppy_queue) - blk_cleanup_queue(floppy_queue); + if (q) + blk_cleanup_queue(q); + } + unregister_blkdev(FLOPPY_MAJOR, "fd"); return -ENOMEM; } @@ -2012,12 +2038,14 @@ static void __exit atari_floppy_exit(void) int i; blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); for (i = 0; i < FD_MAX_UNITS; i++) { + struct request_queue *q = unit[i].disk->queue; + del_gendisk(unit[i].disk); put_disk(unit[i].disk); + blk_cleanup_queue(q); } unregister_blkdev(FLOPPY_MAJOR, "fd"); - blk_cleanup_queue(floppy_queue); del_timer_sync(&fd_timer); atari_stram_free( DMABuffer ); } |