ide-cd: convert driver to new ide debugging macro (v3)

Also,

- leave in the possibility for optimizing away all debugging macros
- add a PFX macro and prepend all printk calls with it for consistency
- add debug macro calls in important driver paths
- remove #if 0-ed code
- mv restore_request -> ide_cd_restore_request
- add a driver registration printk

v2:
failed_command can be NULL so check it before accessing it

v3:
fix another NULL ptr in debug statement

There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 150 insertions, 37 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 880d6d042fc8..52e4bbdfd4a8 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -23,6 +23,9 @@
  *      Documentation/ide/ChangeLog.ide-cd.1994-2004
  */
 
+#define DRV_NAME "ide-cd"
+#define PFX DRV_NAME ": "
+
 #define IDECD_VERSION "5.00"
 
 #include <linux/module.h>
@@ -50,6 +53,14 @@
 
 #include "ide-cd.h"
 
+#define IDECD_DEBUG_LOG         1
+
+#if IDECD_DEBUG_LOG
+#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args)
+#else
+#define ide_debug_log(lvl, fmt, args...) do {} while (0)
+#endif
+
 static DEFINE_MUTEX(idecd_ref_mutex);
 
 static void ide_cd_release(struct kref *);
@@ -97,6 +108,9 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
 {
         int log = 0;
 
+        ide_debug_log(IDE_DBG_SENSE, "Call %s, sense_key: 0x%x\n", __func__,
+                      sense->sense_key);
+
         if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
                 return 0;
 
@@ -145,6 +159,14 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
         unsigned long bio_sectors;
         struct cdrom_info *info = drive->driver_data;
 
+        ide_debug_log(IDE_DBG_SENSE, "Call %s, error_code: 0x%x, "
+                        "sense_key: 0x%x\n", __func__, sense->error_code,
+                        sense->sense_key);
+
+        if (failed_command)
+                ide_debug_log(IDE_DBG_SENSE, "%s: failed cmd: 0x%x\n",
+                                __func__, failed_command->cmd[0]);
+
         if (!cdrom_log_sense(drive, failed_command, sense))
                 return;
 
@@ -195,6 +217,8 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
         struct cdrom_info *info         = drive->driver_data;
         struct request *rq              = &info->request_sense_request;
 
+        ide_debug_log(IDE_DBG_SENSE, "Call %s\n", __func__);
+
         if (sense == NULL)
                 sense = &info->sense_data;
 
@@ -214,6 +238,10 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
         /* NOTE! Save the failed command in "rq->buffer" */
         rq->buffer = (void *) failed_command;
 
+        if (failed_command)
+                ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x\n",
+                              failed_command->cmd[0]);
+
         ide_do_drive_cmd(drive, rq);
 }
 
@@ -222,6 +250,10 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
         struct request *rq = HWGROUP(drive)->rq;
         int nsectors = rq->hard_cur_sectors;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s, cmd: 0x%x, uptodate: 0x%x, "
+                      "nsectors: %d\n", __func__, rq->cmd[0], uptodate,
+                      nsectors);
+
         if (blk_sense_request(rq) && uptodate) {
                 /*
                  * For REQ_TYPE_SENSE, "rq->buffer" points to the original
@@ -264,6 +296,9 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
         if (!nsectors)
                 nsectors = 1;
 
+        ide_debug_log(IDE_DBG_FUNC, "Exit %s, uptodate: 0x%x, nsectors: %d\n",
+                      __func__, uptodate, nsectors);
+
         ide_end_request(drive, uptodate, nsectors);
 }
 
@@ -299,11 +334,15 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
         sense_key = err >> 4;
 
         if (rq == NULL) {
-                printk(KERN_ERR "%s: missing rq in %s\n",
+                printk(KERN_ERR PFX "%s: missing rq in %s\n",
                                 drive->name, __func__);
                 return 1;
         }
 
+        ide_debug_log(IDE_DBG_RQ, "%s: stat: 0x%x, good_stat: 0x%x, "
+                      "rq->cmd_type: 0x%x, err: 0x%x\n", __func__, stat,
+                      good_stat, rq->cmd_type, err);
+
         if (blk_sense_request(rq)) {
                 /*
                  * We got an error trying to get sense info from the drive
@@ -369,7 +408,8 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
                                 cdrom_saw_media_change(drive);
 
                                 /* fail the request */
-                                printk(KERN_ERR "%s: tray open\n", drive->name);
+                                printk(KERN_ERR PFX "%s: tray open\n",
+                                                drive->name);
                                 do_end_request = 1;
                         } else {
                                 struct cdrom_info *info = drive->driver_data;
@@ -455,7 +495,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
                 if (stat & ATA_ERR)
                         cdrom_queue_request_sense(drive, NULL, NULL);
         } else {
-                blk_dump_rq_flags(rq, "ide-cd: bad rq");
+                blk_dump_rq_flags(rq, PFX "bad rq");
                 cdrom_end_request(drive, 0);
         }
 
@@ -483,6 +523,9 @@ static int cdrom_timer_expiry(ide_drive_t *drive)
         struct request *rq = HWGROUP(drive)->rq;
         unsigned long wait = 0;
 
+        ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd[0]: 0x%x\n", __func__,
+                      rq->cmd[0]);
+
         /*
          * Some commands are *slow* and normally take a long time to complete.
          * Usually we can use the ATAPI "disconnect" to bypass this, but not all
@@ -499,7 +542,7 @@ static int cdrom_timer_expiry(ide_drive_t *drive)
                 break;
         default:
                 if (!(rq->cmd_flags & REQ_QUIET))
-                        printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
+                        printk(KERN_INFO PFX "cmd 0x%x timed out\n",
                                          rq->cmd[0]);
                 wait = 0;
                 break;
@@ -522,6 +565,8 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
         struct cdrom_info *info = drive->driver_data;
         ide_hwif_t *hwif = drive->hwif;
 
+        ide_debug_log(IDE_DBG_PC, "Call %s, xferlen: %d\n", __func__, xferlen);
+
         /* FIXME: for Virtual DMA we must check harder */
         if (info->dma)
                 info->dma = !hwif->dma_ops->dma_setup(drive);
@@ -562,6 +607,8 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
         struct cdrom_info *info = drive->driver_data;
         ide_startstop_t startstop;
 
+        ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__);
+
         if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
                 /*
                  * Here we should have been called after receiving an interrupt
@@ -610,6 +657,9 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
 {
         ide_hwif_t *hwif = drive->hwif;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s, ireason: 0x%x, rw: 0x%x\n",
+                      __func__, ireason, rw);
+
         /*
          * ireason == 0: the drive wants to receive data from us
          * ireason == 2: the drive is expecting to transfer data to us
@@ -619,7 +669,7 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
         else if (ireason == (rw << 1)) {
 
                 /* whoops... */
-                printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
+                printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
                                 drive->name, __func__);
 
                 ide_pad_transfer(drive, rw, len);
@@ -632,7 +682,7 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
                 return 0;
         } else {
                 /* drive wants a command packet, or invalid ireason... */
-                printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
+                printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
                                 drive->name, __func__, ireason);
         }
 
@@ -649,17 +699,19 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
  */
 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
 {
+        ide_debug_log(IDE_DBG_FUNC, "Call %s, len: %d\n", __func__, len);
+
         if ((len % SECTOR_SIZE) == 0)
                 return 0;
 
-        printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
-                        drive->name, __func__, len);
+        printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
+                        __func__, len);
 
         if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
-                printk(KERN_ERR "  This drive is not supported by "
-                                "this version of the driver\n");
+                printk(KERN_ERR PFX "This drive is not supported by this "
+                                "version of the driver\n");
         else {
-                printk(KERN_ERR "  Trying to limit transfer sizes\n");
+                printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
                 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
         }
 
@@ -671,6 +723,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
                                                  struct request *rq)
 {
+        ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd_flags: 0x%x\n", __func__,
+                      rq->cmd_flags);
+
         if (rq_data_dir(rq) == READ) {
                 unsigned short sectors_per_frame =
                         queue_hardsect_size(drive->queue) >> SECTOR_BITS;
@@ -690,7 +745,7 @@ static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
                         /* sanity check... */
                         if (rq->current_nr_sectors !=
                             bio_cur_sectors(rq->bio)) {
-                                printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
+                                printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
                                                 drive->name, __func__,
                                                 rq->current_nr_sectors);
                                 cdrom_end_request(drive, 0);
@@ -699,11 +754,7 @@ static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
                         rq->current_nr_sectors += nskip;
                 }
         }
-#if 0
-        else
-                /* the immediate bit */
-                rq->cmd[1] = 1 << 3;
-#endif
+
         /* set up the command */
         rq->timeout = ATAPI_WAIT_PC;
 
@@ -734,6 +785,8 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
         int stat;
         static int retry = 10;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         if (cdrom_decode_status(drive, 0, &stat))
                 return ide_stopped;
 
@@ -750,6 +803,8 @@ static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
 {
         sector_t frame = rq->sector;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
 
         memset(rq->cmd, 0, BLK_MAX_CDB);
@@ -770,8 +825,11 @@ static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
  * Fix up a possibly partially-processed request so that we can start it over
  * entirely, or even put it back on the request queue.
  */
-static void restore_request(struct request *rq)
+static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq)
 {
+
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         if (rq->buffer != bio_data(rq->bio)) {
                 sector_t n =
                         (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
@@ -790,8 +848,11 @@ static void restore_request(struct request *rq)
 /*
  * All other packet commands.
  */
-static void ide_cd_request_sense_fixup(struct request *rq)
+static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
 {
+
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         /*
          * Some of the trailing request sense fields are optional,
          * and some drives don't send them.  Sigh.
@@ -817,6 +878,10 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
         if (!sense)
                 sense = &local_sense;
 
+        ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x, "
+                      "timeout: %d, cmd_flags: 0x%x\n", __func__, cmd[0], write,
+                      timeout, cmd_flags);
+
         /* start of retry loop */
         do {
                 struct request *rq;
@@ -900,13 +965,16 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
         u16 len;
         u8 ireason;
 
+        ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x\n",
+                      __func__, rq->cmd[0], write);
+
         /* check for errors */
         dma = info->dma;
         if (dma) {
                 info->dma = 0;
                 dma_error = hwif->dma_ops->dma_end(drive);
                 if (dma_error) {
-                        printk(KERN_ERR "%s: DMA %s error\n", drive->name,
+                        printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
                                         write ? "write" : "read");
                         ide_dma_off(drive);
                 }
@@ -932,6 +1000,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
         if (thislen > len)
                 thislen = len;
 
+        ide_debug_log(IDE_DBG_PC, "%s: DRQ: stat: 0x%x, thislen: %d\n",
+                      __func__, stat, thislen);
+
         /* If DRQ is clear, the command has completed. */
         if ((stat & ATA_DRQ) == 0) {
                 if (blk_fs_request(rq)) {
@@ -941,7 +1012,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                          */
                         uptodate = 1;
                         if (rq->current_nr_sectors > 0) {
-                                printk(KERN_ERR "%s: %s: data underrun "
+                                printk(KERN_ERR PFX "%s: %s: data underrun "
                                                 "(%d blocks)\n",
                                                 drive->name, __func__,
                                                 rq->current_nr_sectors);
@@ -952,7 +1023,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                         cdrom_end_request(drive, uptodate);
                         return ide_stopped;
                 } else if (!blk_pc_request(rq)) {
-                        ide_cd_request_sense_fixup(rq);
+                        ide_cd_request_sense_fixup(drive, rq);
                         /* complain if we still have data left to transfer */
                         uptodate = rq->data_len ? 0 : 1;
                 }
@@ -995,6 +1066,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                 xferfunc = hwif->tp_ops->input_data;
         }
 
+        ide_debug_log(IDE_DBG_PC, "%s: data transfer, rq->cmd_type: 0x%x, "
+                      "ireason: 0x%x\n", __func__, rq->cmd_type, ireason);
+
         /* transfer data */
         while (thislen > 0) {
                 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
@@ -1019,7 +1093,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
                                  */
                                 ide_pad_transfer(drive, 0, thislen);
                         else {
-                                printk(KERN_ERR "%s: confused, missing data\n",
+                                printk(KERN_ERR PFX "%s: confused, missing data\n",
                                                 drive->name);
                                 blk_dump_rq_flags(rq, rq_data_dir(rq)
                                                   ? "cdrom_newpc_intr, write"
@@ -1106,6 +1180,9 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
         unsigned short sectors_per_frame =
                 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
 
+        ide_debug_log(IDE_DBG_RQ, "Call %s, write: 0x%x, secs_per_frame: %u\n",
+                      __func__, write, sectors_per_frame);
+
         if (write) {
                 /* disk has become write protected */
                 if (get_disk_ro(cd->disk)) {
@@ -1117,7 +1194,7 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
                  * We may be retrying this request after an error.  Fix up any
                  * weirdness which might be present in the request packet.
                  */
-                restore_request(rq);
+                ide_cd_restore_request(drive, rq);
         }
 
         /* use DMA, if possible / writes *must* be hardware frame aligned */
@@ -1148,6 +1225,9 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 {
         struct cdrom_info *info = drive->driver_data;
 
+        ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd_type: 0x%x\n", __func__,
+                      rq->cmd_type);
+
         if (blk_pc_request(rq))
                 rq->cmd_flags |= REQ_QUIET;
         else
@@ -1191,6 +1271,9 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
         ide_handler_t *fn;
         int xferlen;
 
+        ide_debug_log(IDE_DBG_RQ, "Call %s, rq->cmd_type: 0x%x, block: %llu\n",
+                      __func__, rq->cmd_type, (u64)block);
+
         if (blk_fs_request(rq)) {
                 if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
                         ide_hwif_t *hwif = drive->hwif;
@@ -1203,7 +1286,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
                                                         IDECD_SEEK_TIMER);
                                         return ide_stopped;
                                 }
-                                printk(KERN_ERR "%s: DSC timeout\n",
+                                printk(KERN_ERR PFX "%s: DSC timeout\n",
                                                 drive->name);
                         }
                         drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
@@ -1244,7 +1327,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
                 cdrom_end_request(drive, 1);
                 return ide_stopped;
         } else {
-                blk_dump_rq_flags(rq, "ide-cd bad flags");
+                blk_dump_rq_flags(rq, DRV_NAME " bad flags");
                 cdrom_end_request(drive, 0);
                 return ide_stopped;
         }
@@ -1274,6 +1357,8 @@ int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
         struct cdrom_device_info *cdi = &info->devinfo;
         unsigned char cmd[BLK_MAX_CDB];
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         memset(cmd, 0, BLK_MAX_CDB);
         cmd[0] = GPCMD_TEST_UNIT_READY;
 
@@ -1300,6 +1385,8 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
         unsigned len = sizeof(capbuf);
         u32 blocklen;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         memset(cmd, 0, BLK_MAX_CDB);
         cmd[0] = GPCMD_READ_CDVD_CAPACITY;
 
@@ -1319,10 +1406,10 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
         case 4096:
                 break;
         default:
-                printk(KERN_ERR "%s: weird block size %u\n",
-                        drive->name, blocklen);
-                printk(KERN_ERR "%s: default to 2kb block size\n",
-                        drive->name);
+                printk(KERN_ERR PFX "%s: weird block size %u\n",
+                                drive->name, blocklen);
+                printk(KERN_ERR PFX "%s: default to 2kb block size\n",
+                                drive->name);
                 blocklen = 2048;
                 break;
         }
@@ -1338,6 +1425,8 @@ static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
 {
         unsigned char cmd[BLK_MAX_CDB];
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         memset(cmd, 0, BLK_MAX_CDB);
 
         cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
@@ -1366,11 +1455,13 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
         long last_written;
         unsigned long sectors_per_frame = SECTORS_PER_FRAME;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         if (toc == NULL) {
                 /* try to allocate space */
                 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
                 if (toc == NULL) {
-                        printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
+                        printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
                                         drive->name);
                         return -ENOMEM;
                 }
@@ -1526,6 +1617,8 @@ int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
         struct packet_command cgc;
         int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
                 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
 
@@ -1544,6 +1637,8 @@ void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
         struct cdrom_info *cd = drive->driver_data;
         u16 curspeed, maxspeed;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
                 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
                 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
@@ -1584,6 +1679,8 @@ static int ide_cdrom_register(ide_drive_t *drive, int nslots)
         struct cdrom_info *info = drive->driver_data;
         struct cdrom_device_info *devinfo = &info->devinfo;
 
+        ide_debug_log(IDE_DBG_PROBE, "Call %s, nslots: %d\n", __func__, nslots);
+
         devinfo->ops = &ide_cdrom_dops;
         devinfo->speed = info->current_speed;
         devinfo->capacity = nslots;
@@ -1605,13 +1702,17 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
         mechtype_t mechtype;
         int nslots = 1;
 
+        ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->media: 0x%x, "
+                      "drive->atapi_flags: 0x%lx\n", __func__, drive->media,
+                      drive->atapi_flags);
+
         cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
                      CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
                      CDC_MO_DRIVE | CDC_RAM);
 
         if (drive->media == ide_optical) {
                 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
-                printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
+                printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
                                 drive->name);
                 return nslots;
         }
@@ -1669,7 +1770,7 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
 
         ide_cdrom_update_speed(drive, buf);
 
-        printk(KERN_INFO "%s: ATAPI", drive->name);
+        printk(KERN_INFO PFX "%s: ATAPI", drive->name);
 
         /* don't print speed if the drive reported 0 */
         if (cd->max_speed)
@@ -1692,7 +1793,8 @@ static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
         else
                 printk(KERN_CONT " drive");
 
-        printk(KERN_CONT ", %dkB Cache\n", be16_to_cpup((__be16 *)&buf[8 + 12]));
+        printk(KERN_CONT ", %dkB Cache\n",
+                         be16_to_cpup((__be16 *)&buf[8 + 12]));
 
         return nslots;
 }
@@ -1879,6 +1981,8 @@ static int ide_cdrom_setup(ide_drive_t *drive)
         char *fw_rev = (char *)&id[ATA_ID_FW_REV];
         int nslots;
 
+        ide_debug_log(IDE_DBG_PROBE, "Call %s\n", __func__);
+
         blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
         blk_queue_dma_alignment(drive->queue, 31);
         blk_queue_update_dma_pad(drive->queue, 15);
@@ -1911,7 +2015,7 @@ static int ide_cdrom_setup(ide_drive_t *drive)
                 drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
 
         if (ide_cdrom_register(drive, nslots)) {
-                printk(KERN_ERR "%s: %s failed to register device with the"
+                printk(KERN_ERR PFX "%s: %s failed to register device with the"
                                 " cdrom driver.\n", drive->name, __func__);
                 cd->devinfo.handle = NULL;
                 return 1;
@@ -1925,6 +2029,8 @@ static void ide_cd_remove(ide_drive_t *drive)
 {
         struct cdrom_info *info = drive->driver_data;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         ide_proc_unregister_driver(drive, info->driver);
 
         del_gendisk(info->disk);
@@ -1939,6 +2045,8 @@ static void ide_cd_release(struct kref *kref)
         ide_drive_t *drive = info->drive;
         struct gendisk *g = info->disk;
 
+        ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
+
         kfree(info->toc);
         if (devinfo->handle == drive)
                 unregister_cdrom(devinfo);
@@ -2099,6 +2207,10 @@ static int ide_cd_probe(ide_drive_t *drive)
         struct gendisk *g;
         struct request_sense sense;
 
+        ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->driver_req: %s, "
+                      "drive->media: 0x%x\n", __func__, drive->driver_req,
+                      drive->media);
+
         if (!strstr("ide-cdrom", drive->driver_req))
                 goto failed;
 
@@ -2108,14 +2220,14 @@ static int ide_cd_probe(ide_drive_t *drive)
         /* skip drives that we were told to ignore */
         if (ignore != NULL) {
                 if (strstr(ignore, drive->name)) {
-                        printk(KERN_INFO "ide-cd: ignoring drive %s\n",
+                        printk(KERN_INFO PFX "ignoring drive %s\n",
                                          drive->name);
                         goto failed;
                 }
         }
         info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
         if (info == NULL) {
-                printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
+                printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
                                 drive->name);
                 goto failed;
         }
@@ -2163,6 +2275,7 @@ static void __exit ide_cdrom_exit(void)
 
 static int __init ide_cdrom_init(void)
 {
+        printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
         return driver_register(&ide_cdrom_driver.gen_driver);
 }