diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/swim3.c | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index c1b9a4dc11b..f48c6dd47e0 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -251,6 +251,20 @@ static int floppy_release(struct gendisk *disk, fmode_t mode); static int floppy_check_change(struct gendisk *disk); static int floppy_revalidate(struct gendisk *disk); +static bool swim3_end_request(int err, unsigned int nr_bytes) +{ + if (__blk_end_request(fd_req, err, nr_bytes)) + return true; + + fd_req = NULL; + return false; +} + +static bool swim3_end_request_cur(int err) +{ + return swim3_end_request(err, blk_rq_cur_bytes(fd_req)); +} + static void swim3_select(struct floppy_state *fs, int sel) { struct swim3 __iomem *sw = fs->swim3; @@ -310,7 +324,14 @@ static void start_request(struct floppy_state *fs) wake_up(&fs->wait); return; } - while (fs->state == idle && (req = elv_next_request(swim3_queue))) { + while (fs->state == idle) { + if (!fd_req) { + fd_req = elv_next_request(swim3_queue); + if (!fd_req) + break; + blkdev_dequeue_request(fd_req); + } + req = fd_req; #if 0 printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%u buf=%p\n", req->rq_disk->disk_name, req->cmd, @@ -320,11 +341,11 @@ static void start_request(struct floppy_state *fs) #endif if (blk_rq_pos(req) >= fs->total_secs) { - __blk_end_request_cur(req, -EIO); + swim3_end_request_cur(-EIO); continue; } if (fs->ejected) { - __blk_end_request_cur(req, -EIO); + swim3_end_request_cur(-EIO); continue; } @@ -332,7 +353,7 @@ static void start_request(struct floppy_state *fs) if (fs->write_prot < 0) fs->write_prot = swim3_readbit(fs, WRITE_PROT); if (fs->write_prot) { - __blk_end_request_cur(req, -EIO); + swim3_end_request_cur(-EIO); continue; } } @@ -505,7 +526,7 @@ static void act(struct floppy_state *fs) case do_transfer: if (fs->cur_cyl != fs->req_cyl) { if (fs->retries > 5) { - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; return; } @@ -537,7 +558,7 @@ static void scan_timeout(unsigned long data) out_8(&sw->intr_enable, 0); fs->cur_cyl = -1; if (fs->retries > 5) { - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); } else { @@ -556,7 +577,7 @@ static void seek_timeout(unsigned long data) out_8(&sw->select, RELAX); out_8(&sw->intr_enable, 0); printk(KERN_ERR "swim3: seek timeout\n"); - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); } @@ -580,7 +601,7 @@ static void settle_timeout(unsigned long data) return; } printk(KERN_ERR "swim3: seek settle timeout\n"); - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); } @@ -603,7 +624,7 @@ static void xfer_timeout(unsigned long data) printk(KERN_ERR "swim3: timeout %sing sector %ld\n", (rq_data_dir(fd_req)==WRITE? "writ": "read"), (long)blk_rq_pos(fd_req)); - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); } @@ -634,7 +655,7 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id) printk(KERN_ERR "swim3: seen sector but cyl=ff?\n"); fs->cur_cyl = -1; if (fs->retries > 5) { - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); } else { @@ -717,7 +738,7 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id) printk("swim3: error %sing block %ld (err=%x)\n", rq_data_dir(fd_req) == WRITE? "writ": "read", (long)blk_rq_pos(fd_req), err); - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; } } else { @@ -726,12 +747,12 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id) printk(KERN_ERR "swim3: fd dma: stat=%x resid=%d\n", stat, resid); printk(KERN_ERR " state=%d, dir=%x, intr=%x, err=%x\n", fs->state, rq_data_dir(fd_req), intr, err); - __blk_end_request_cur(fd_req, -EIO); + swim3_end_request_cur(-EIO); fs->state = idle; start_request(fs); break; } - if (__blk_end_request(fd_req, 0, fs->scount << 9)) { + if (swim3_end_request(0, fs->scount << 9)) { fs->req_sector += fs->scount; if (fs->req_sector > fs->secpertrack) { fs->req_sector -= fs->secpertrack; |