From: Christian Borntraeger Date: Tue, 4 Dec 2007 15:09:03 +0000 (+0100) Subject: [S390] dcssblk: prevent early access without own make_request function X-Git-Tag: v2.6.24-rc5~111^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=436d1bc7fe6e78e37fe5f5022ea4d5c133d825eb;p=platform%2Fkernel%2Flinux-stable.git [S390] dcssblk: prevent early access without own make_request function When loading a dcss segment with the dcssblk driver, sometimes the following kind of message appears: bio too big device dcssblk0 (8 > 0) Buffer I/O error on device dcssblk0, logical block 172016 .. The fix is to move the disk registration after setting the make_request function, to avoid calls into generic_make_request for dcssblock without having the make_request function set up properly. Cc: Gerald Schaefer Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 5e083d1..15a5789 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -472,11 +472,11 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char if (rc) goto unregister_dev; - add_disk(dev_info->gd); - blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request); blk_queue_hardsect_size(dev_info->dcssblk_queue, 4096); + add_disk(dev_info->gd); + switch (dev_info->segment_type) { case SEG_TYPE_SR: case SEG_TYPE_ER: