#include <linux/major.h>
#include <linux/errno.h>
#include <linux/genhd.h>
+#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/ide.h>
* other device. Note that at most we will have only one DSC (usually
* data transfer) request in the device request queue.
*/
- struct request *postponed_rq;
+ bool postponed_rq;
+
/* The time in which we started polling for DSC */
unsigned long dsc_polling_start;
/* Timer used to poll for dsc */
* Postpone the current request so that ide.c will be able to service requests
* from another device on the same port while we are polling for DSC.
*/
-static void idetape_postpone_request(ide_drive_t *drive)
+static void ide_tape_stall_queue(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
- struct request *rq = drive->hwif->rq;
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc_poll_freq: %lu",
- rq->cmd[0], tape->dsc_poll_freq);
+ drive->hwif->rq->cmd[0], tape->dsc_poll_freq);
- tape->postponed_rq = rq;
+ tape->postponed_rq = true;
ide_stall_queue(drive, tape->dsc_poll_freq);
}
tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST;
tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT;
/* Allow ide.c to handle other requests */
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
}
/*
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = NULL;
- struct request *postponed_rq = tape->postponed_rq;
struct ide_cmd cmd;
u8 stat;
goto out;
}
- if (postponed_rq != NULL)
- if (rq != postponed_rq) {
- printk(KERN_ERR "ide-tape: ide-tape.c bug - "
- "Two DSC requests were queued\n");
- drive->failed_pc = NULL;
- rq->errors = 0;
- ide_complete_rq(drive, 0, blk_rq_bytes(rq));
- return ide_stopped;
- }
-
- tape->postponed_rq = NULL;
-
/*
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
if (!(drive->atapi_flags & IDE_AFLAG_IGNORE_DSC) &&
!(stat & ATA_DSC)) {
- if (postponed_rq == NULL) {
+ if (!tape->postponed_rq) {
tape->dsc_polling_start = jiffies;
tape->dsc_poll_freq = tape->best_dsc_rw_freq;
tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT;
tape->dsc_polling_start +
IDETAPE_DSC_MA_THRESHOLD))
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW;
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
return ide_stopped;
- } else
+ } else {
drive->atapi_flags &= ~IDE_AFLAG_IGNORE_DSC;
+ tape->postponed_rq = false;
+ }
if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = &tape->queued_pc;
}
#ifdef CONFIG_IDE_PROC_FS
-static int proc_idetape_read_name
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idetape_name_proc_show(struct seq_file *m, void *v)
{
- ide_drive_t *drive = (ide_drive_t *) data;
+ ide_drive_t *drive = (ide_drive_t *) m->private;
idetape_tape_t *tape = drive->driver_data;
- char *out = page;
- int len;
- len = sprintf(out, "%s\n", tape->name);
- PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
+ seq_printf(m, "%s\n", tape->name);
+ return 0;
+}
+
+static int idetape_name_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, idetape_name_proc_show, PDE(inode)->data);
}
+static const struct file_operations idetape_name_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idetape_name_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static ide_proc_entry_t idetape_proc[] = {
- { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
- { "name", S_IFREG|S_IRUGO, proc_idetape_read_name, NULL },
- { NULL, 0, NULL, NULL }
+ { "capacity", S_IFREG|S_IRUGO, &ide_capacity_proc_fops },
+ { "name", S_IFREG|S_IRUGO, &idetape_name_proc_fops },
+ {}
};
static ide_proc_entry_t *ide_tape_proc_entries(ide_drive_t *drive)
return err;
}
-static struct block_device_operations idetape_block_ops = {
+static const struct block_device_operations idetape_block_ops = {
.owner = THIS_MODULE,
.open = idetape_open,
.release = idetape_release,