tree 80ce3f3df44f8209cc8e047fadad3199337ff266
parent 3915c3b5b10cd127198c1f9e2aefff7808500d92
author Shan Hai <shan.hai@windriver.com> 1382947681 +0800
committer Tejun Heo <tj@kernel.org> 1382958603 -0400

drivers/libata: Set max sector to 65535 for Slimtype DVD A DS8A9SH drive

The "Slimtype DVD A  DS8A9SH" drive locks up with following backtrace when
the max sector is smaller than 65535 bytes, fix it by adding a quirk to set
the max sector to 65535 bytes.

INFO: task flush-11:0:663 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
flush-11:0    D 00000000ffff5ceb     0   663      2 0x00000000
 ffff88026d3b1710 0000000000000046 0000000000000001 0000000000000000
 ffff88026f2530c0 ffff88026d365860 ffff88026d3b16e0 ffffffff812ffd52
 ffff88026d4fd3d0 0000000100000001 ffff88026d3b16f0 ffff88026d3b1fd8
Call Trace:
 [<ffffffff812ffd52>] ? cfq_may_queue+0x52/0xf0
 [<ffffffff81604338>] schedule+0x18/0x30
 [<ffffffff81604392>] io_schedule+0x42/0x60
 [<ffffffff812f22bb>] get_request_wait+0xeb/0x1f0
 [<ffffffff81065660>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff812eb382>] ? elv_merge+0x42/0x210
 [<ffffffff812f26ae>] __make_request+0x8e/0x4e0
 [<ffffffff812f068e>] generic_make_request+0x21e/0x5e0
 [<ffffffff812f0aad>] submit_bio+0x5d/0xd0
 [<ffffffff81141422>] submit_bh+0xf2/0x130
 [<ffffffff8114474c>] __block_write_full_page+0x1dc/0x3a0
 [<ffffffff81143f60>] ? end_buffer_async_write+0x0/0x120
 [<ffffffff811474e0>] ? blkdev_get_block+0x0/0x70
 [<ffffffff811474e0>] ? blkdev_get_block+0x0/0x70
 [<ffffffff81143f60>] ? end_buffer_async_write+0x0/0x120
 [<ffffffff811449ee>] block_write_full_page_endio+0xde/0x100
 [<ffffffff81144a20>] block_write_full_page+0x10/0x20
 [<ffffffff81148703>] blkdev_writepage+0x13/0x20
 [<ffffffff810d7525>] __writepage+0x15/0x40
 [<ffffffff810d7c0f>] write_cache_pages+0x1cf/0x3e0
 [<ffffffff810d7510>] ? __writepage+0x0/0x40
 [<ffffffff810d7e42>] generic_writepages+0x22/0x30
 [<ffffffff810d7e6f>] do_writepages+0x1f/0x40
 [<ffffffff8113ae67>] writeback_single_inode+0xe7/0x3b0
 [<ffffffff8113b574>] writeback_sb_inodes+0x184/0x280
 [<ffffffff8113bedb>] writeback_inodes_wb+0x6b/0x1a0
 [<ffffffff8113c24b>] wb_writeback+0x23b/0x2a0
 [<ffffffff8113c42d>] wb_do_writeback+0x17d/0x190
 [<ffffffff8113c48b>] bdi_writeback_task+0x4b/0xe0
 [<ffffffff810e82a0>] ? bdi_start_fn+0x0/0x100
 [<ffffffff810e8321>] bdi_start_fn+0x81/0x100
 [<ffffffff810e82a0>] ? bdi_start_fn+0x0/0x100
 [<ffffffff8106522e>] kthread+0x8e/0xa0
 [<ffffffff81039274>] ? finish_task_switch+0x54/0xc0
 [<ffffffff81003334>] kernel_thread_helper+0x4/0x10
 [<ffffffff810651a0>] ? kthread+0x0/0xa0
 [<ffffffff81003330>] ? kernel_thread_helper+0x0/0x10

 The above trace was triggered by
   "dd if=/dev/zero of=/dev/sr0 bs=2048 count=32768"

Cc: stable@vger.kernel.org
Signed-off-by: Shan Hai <shan.hai@windriver.com>
Signed-off-by: Tejun Heo <tj@kernel.org>