[PATCH 4/8] ide: move ->failed_pc to ide_drive_t

[Bartlomiej Zolnierkiewicz]

From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide: move ->failed_pc to ide_drive_t

Move ->failed_pc from struct ide_{disk,tape}_obj to ide_drive_t.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@xxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
 drivers/ide/ide-floppy.c |   21 ++++++++++-----------
 drivers/ide/ide-gd.h     |    2 --
 drivers/ide/ide-tape.c   |   29 ++++++++++-------------------
 include/linux/ide.h      |    3 +++
 4 files changed, 23 insertions(+), 32 deletions(-)

Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -70,7 +70,6 @@
  */
 static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
 {
-	struct ide_disk_obj *floppy = drive->driver_data;
 	struct request *rq = drive->hwif->rq;
 	int error;
 
@@ -90,7 +89,7 @@ static int ide_floppy_end_request(ide_dr
 	}
 
 	if (error)
-		floppy->failed_pc = NULL;
+		drive->failed_pc = NULL;
 
 	if (!blk_special_request(rq)) {
 		/* our real local end request function */
@@ -121,8 +120,8 @@ static void ide_floppy_callback(ide_driv
 
 	ide_debug_log(IDE_DBG_FUNC, "enter");
 
-	if (floppy->failed_pc == pc)
-		floppy->failed_pc = NULL;
+	if (drive->failed_pc == pc)
+		drive->failed_pc = NULL;
 
 	if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
 	    (pc->rq && blk_pc_request(pc->rq)))
@@ -137,9 +136,9 @@ static void ide_floppy_callback(ide_driv
 			floppy->progress_indication = buf[15] & 0x80 ?
 				(u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
 
-			if (floppy->failed_pc)
+			if (drive->failed_pc)
 				ide_debug_log(IDE_DBG_PC, "pc = %x",
-					      floppy->failed_pc->c[0]);
+					      drive->failed_pc->c[0]);
 
 			ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
 				      "ascq = %x", floppy->sense_key,
@@ -173,9 +172,9 @@ static ide_startstop_t idefloppy_issue_p
 {
 	struct ide_disk_obj *floppy = drive->driver_data;
 
-	if (floppy->failed_pc == NULL &&
+	if (drive->failed_pc == NULL &&
 	    pc->c[0] != GPCMD_REQUEST_SENSE)
-		floppy->failed_pc = pc;
+		drive->failed_pc = pc;
 
 	/* Set the current packet command */
 	drive->pc = pc;
@@ -186,7 +185,7 @@ static ide_startstop_t idefloppy_issue_p
 		/* Giving up */
 		pc->error = IDEFLOPPY_ERROR_GENERAL;
 
-		floppy->failed_pc = NULL;
+		drive->failed_pc = NULL;
 		drive->pc_callback(drive, 0);
 		return ide_stopped;
 	}
@@ -290,8 +289,8 @@ static ide_startstop_t ide_floppy_do_req
 					: "dev?"));
 
 	if (rq->errors >= ERROR_MAX) {
-		if (floppy->failed_pc)
-			ide_floppy_report_error(floppy, floppy->failed_pc);
+		if (drive->failed_pc)
+			ide_floppy_report_error(floppy, drive->failed_pc);
 		else
 			printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
 
Index: b/drivers/ide/ide-gd.h
===================================================================
--- a/drivers/ide/ide-gd.h
+++ b/drivers/ide/ide-gd.h
@@ -20,8 +20,6 @@ struct ide_disk_obj {
 	struct kref		kref;
 	unsigned int		openers;	/* protected by BKL for now */
 
-	/* Last failed packet command */
-	struct ide_atapi_pc *failed_pc;
 	/* used for blk_{fs,pc}_request() requests */
 	struct ide_atapi_pc queued_pc;
 
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -171,14 +171,6 @@ typedef struct ide_tape_obj {
 	struct gendisk		*disk;
 	struct kref		kref;
 
-	/*
-	 *	failed_pc points to the last failed packet command, or contains
-	 *	NULL if we do not need to retry any packet command. This is
-	 *	required since an additional packet command is needed before the
-	 *	retry, to get detailed information on what went wrong.
-	 */
-	/* Last failed packet command */
-	struct ide_atapi_pc *failed_pc;
 	/* used by REQ_IDETAPE_{READ,WRITE} requests */
 	struct ide_atapi_pc queued_pc;
 
@@ -397,7 +389,7 @@ static void idetape_update_buffers(ide_d
 static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
 {
 	idetape_tape_t *tape = drive->driver_data;
-	struct ide_atapi_pc *pc = tape->failed_pc;
+	struct ide_atapi_pc *pc = drive->failed_pc;
 
 	tape->sense_key = sense[2] & 0xF;
 	tape->asc       = sense[12];
@@ -477,7 +469,6 @@ static void ide_tape_kfree_buffer(idetap
 static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
 {
 	struct request *rq = drive->hwif->rq;
-	idetape_tape_t *tape = drive->driver_data;
 	int error;
 
 	debug_log(DBG_PROCS, "Enter %s\n", __func__);
@@ -489,7 +480,7 @@ static int idetape_end_request(ide_drive
 	}
 	rq->errors = error;
 	if (error)
-		tape->failed_pc = NULL;
+		drive->failed_pc = NULL;
 
 	if (!blk_special_request(rq)) {
 		ide_end_request(drive, uptodate, nr_sects);
@@ -514,8 +505,8 @@ static void ide_tape_callback(ide_drive_
 	if (dsc)
 		ide_tape_handle_dsc(drive);
 
-	if (tape->failed_pc == pc)
-		tape->failed_pc = NULL;
+	if (drive->failed_pc == pc)
+		drive->failed_pc = NULL;
 
 	if (pc->c[0] == REQUEST_SENSE) {
 		if (uptodate)
@@ -653,8 +644,8 @@ static ide_startstop_t idetape_issue_pc(
 			"Two request sense in serial were issued\n");
 	}
 
-	if (tape->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
-		tape->failed_pc = pc;
+	if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
+		drive->failed_pc = pc;
 
 	/* Set the current packet command */
 	drive->pc = pc;
@@ -680,7 +671,7 @@ static ide_startstop_t idetape_issue_pc(
 			/* Giving up */
 			pc->error = IDETAPE_ERROR_GENERAL;
 		}
-		tape->failed_pc = NULL;
+		drive->failed_pc = NULL;
 		drive->pc_callback(drive, 0);
 		return ide_stopped;
 	}
@@ -740,7 +731,7 @@ static ide_startstop_t idetape_media_acc
 		pc->error = 0;
 	} else {
 		pc->error = IDETAPE_ERROR_GENERAL;
-		tape->failed_pc = NULL;
+		drive->failed_pc = NULL;
 	}
 	drive->pc_callback(drive, 0);
 	return ide_stopped;
@@ -799,8 +790,8 @@ static ide_startstop_t idetape_do_reques
 	}
 
 	/* Retry a failed packet command */
-	if (tape->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
-		pc = tape->failed_pc;
+	if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
+		pc = drive->failed_pc;
 		goto out;
 	}
 
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -609,6 +609,9 @@ struct ide_drive_s {
 	/* current packet command */
 	struct ide_atapi_pc *pc;
 
+	/* last failed packet command */
+	struct ide_atapi_pc *failed_pc;
+
 	/* callback for packet commands */
 	void (*pc_callback)(struct ide_drive_s *, int);
 
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