ide-scsi: add debug_log() macro

Add debug_log() macro and convert the driver to use it.

[ This makes debug messages to be always prefixed with "ide-scsi: "
  and use KERN_INFO level. ]

While at it:

* Change "DMA complete" debug message to "DMA finished" to match
  other ATAPI device drivers.

* Use __func__.

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

diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index e9d3dbf..d2dad90 100644 (file)
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -60,6 +60,13 @@
 
 #define IDESCSI_DEBUG_LOG              0
 
+#if IDESCSI_DEBUG_LOG
+#define debug_log(fmt, args...) \
+       printk(KERN_INFO "ide-scsi: " fmt, ## args)
+#else
+#define debug_log(fmt, args...) do {} while (0)
+#endif
+
 /*
  *     SCSI command transformation layer
  */
@@ -237,10 +244,9 @@ idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
 static ide_startstop_t
 idescsi_atapi_abort(ide_drive_t *drive, struct request *rq)
 {
-#if IDESCSI_DEBUG_LOG
-       printk(KERN_WARNING "idescsi_atapi_abort called for %lu\n",
+       debug_log("%s called for %lu\n", __func__,
                ((struct ide_atapi_pc *) rq->special)->scsi_cmd->serial_number);
-#endif
+
        rq->errors |= ERROR_MAX;
 
        idescsi_end_request(drive, 0, 0);
@@ -319,9 +325,9 @@ static int idescsi_expiry(ide_drive_t *drive)
        idescsi_scsi_t *scsi = drive_to_idescsi(drive);
        struct ide_atapi_pc   *pc   = scsi->pc;
 
-#if IDESCSI_DEBUG_LOG
-       printk(KERN_WARNING "idescsi_expiry called for %lu at %lu\n", pc->scsi_cmd->serial_number, jiffies);
-#endif
+       debug_log("%s called for %lu at %lu\n", __func__,
+                 pc->scsi_cmd->serial_number, jiffies);
+
        pc->flags |= PC_FLAG_TIMEDOUT;
 
        return 0;                                       /* we do not want the ide subsystem to retry */
@@ -341,15 +347,11 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
        u16 bcount;
        u8 stat, ireason;
 
-#if IDESCSI_DEBUG_LOG
-       printk (KERN_INFO "ide-scsi: Reached idescsi_pc_intr interrupt handler\n");
-#endif /* IDESCSI_DEBUG_LOG */
+       debug_log("Reached %s interrupt handler\n", __func__);
 
        if (pc->flags & PC_FLAG_TIMEDOUT) {
-#if IDESCSI_DEBUG_LOG
-               printk(KERN_WARNING "idescsi_pc_intr: got timed out packet  %lu at %lu\n",
-                               pc->scsi_cmd->serial_number, jiffies);
-#endif
+               debug_log("%s: got timed out packet %lu at %lu\n", __func__,
+                         pc->scsi_cmd->serial_number, jiffies);
                /* end this request now - scsi should retry it*/
                idescsi_end_request (drive, 1, 0);
                return ide_stopped;
@@ -359,9 +361,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
                        pc->flags |= PC_FLAG_DMA_ERROR;
                else
                        pc->xferred = pc->req_xfer;
-#if IDESCSI_DEBUG_LOG
-               printk ("ide-scsi: %s: DMA complete\n", drive->name);
-#endif /* IDESCSI_DEBUG_LOG */
+               debug_log("%s: DMA finished\n", drive->name);
        }
 
        /* Clear the interrupt */
@@ -427,9 +427,8 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
                                ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry);
                                return ide_started;
                        }
-#if IDESCSI_DEBUG_LOG
-                       printk (KERN_NOTICE "ide-scsi: The scsi wants to send us more data than expected - allowing transfer\n");
-#endif /* IDESCSI_DEBUG_LOG */
+                       debug_log("The scsi wants to send us more data than "
+                                 "expected - allowing transfer\n");
                }
                xferfunc = hwif->input_data;
        } else
@@ -566,10 +565,10 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive,
  */
 static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
 {
-#if IDESCSI_DEBUG_LOG
-       printk (KERN_INFO "dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,rq->cmd[0],rq->errors);
-       printk (KERN_INFO "sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",rq->sector,rq->nr_sectors,rq->current_nr_sectors);
-#endif /* IDESCSI_DEBUG_LOG */
+       debug_log("dev: %s, cmd: %x, errors: %d\n", rq->rq_disk->disk_name,
+                 rq->cmd[0], rq->errors);
+       debug_log("sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
+                 rq->sector, rq->nr_sectors, rq->current_nr_sectors);
 
        if (blk_sense_request(rq) || blk_special_request(rq)) {
                return idescsi_issue_pc(drive,
@@ -976,10 +975,10 @@ static int ide_scsi_probe(ide_drive_t *drive)
 
        host->max_id = 1;
 
-#if IDESCSI_DEBUG_LOG
        if (drive->id->last_lun)
-               printk(KERN_NOTICE "%s: id->last_lun=%u\n", drive->name, drive->id->last_lun);
-#endif
+               debug_log("%s: id->last_lun=%u\n", drive->name,
+                         drive->id->last_lun);
+
        if ((drive->id->last_lun & 0x7) != 7)
                host->max_lun = (drive->id->last_lun & 0x7) + 1;
        else