linux-kernel - [PATCH 8/8] ide: return request status from ->pc

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Message-Id: <20090201192838.1592.16234.sendpatchset@localhost.localdomain>
Date:	Sun, 01 Feb 2009 20:28:38 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	Borislav Petkov <petkovbb@...il.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 8/8] ide: return request status from ->pc_callback method

From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] ide: return request status from ->pc_callback method

Make ->pc_callback method return request status and then move
the request completion from ->pc_callback to ide_pc_intr().

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@...il.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
 drivers/ide/ide-atapi.c  |   12 +++++++++++-
 drivers/ide/ide-floppy.c |   12 ++++--------
 drivers/ide/ide-tape.c   |   10 ++--------
 include/linux/ide.h      |    2 +-
 4 files changed, 18 insertions(+), 18 deletions(-)

Index: b/drivers/ide/ide-atapi.c
===================================================================
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -345,6 +345,8 @@ static ide_startstop_t ide_pc_intr(ide_d
 
 	/* No more interrupts */
 	if ((stat & ATA_DRQ) == 0) {
+		int uptodate;
+
 		debug_log("Packet command completed, %d bytes transferred\n",
 			  pc->xferred);
 
@@ -383,7 +385,15 @@ static ide_startstop_t ide_pc_intr(ide_d
 			dsc = 1;
 
 		/* Command finished - Call the callback function */
-		drive->pc_callback(drive, dsc);
+		uptodate = drive->pc_callback(drive, dsc);
+
+		if (uptodate == 0)
+			drive->failed_pc = NULL;
+
+		if (blk_special_request(rq))
+			ide_complete_rq(drive, 0);
+		else
+			ide_end_request(drive, uptodate, 0);
 
 		return ide_stopped;
 	}
Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -71,7 +71,7 @@ static void idefloppy_update_buffers(ide
 		ide_end_request(drive, 1, 0);
 }
 
-static void ide_floppy_callback(ide_drive_t *drive, int dsc)
+static int ide_floppy_callback(ide_drive_t *drive, int dsc)
 {
 	struct ide_disk_obj *floppy = drive->driver_data;
 	struct ide_atapi_pc *pc = drive->pc;
@@ -108,14 +108,10 @@ static void ide_floppy_callback(ide_driv
 			       "Aborting request!\n");
 	}
 
-	if (uptodate == 0)
-		drive->failed_pc = NULL;
-
-	if (blk_special_request(rq)) {
+	if (blk_special_request(rq))
 		rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
-		ide_complete_rq(drive, 0);
-	} else
-		ide_end_request(drive, uptodate, 0);
+
+	return uptodate;
 }
 
 static void ide_floppy_report_error(struct ide_disk_obj *floppy,
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -463,7 +463,7 @@ static void ide_tape_kfree_buffer(idetap
 
 static void ide_tape_handle_dsc(ide_drive_t *);
 
-static void ide_tape_callback(ide_drive_t *drive, int dsc)
+static int ide_tape_callback(ide_drive_t *drive, int dsc)
 {
 	idetape_tape_t *tape = drive->driver_data;
 	struct ide_atapi_pc *pc = drive->pc;
@@ -530,13 +530,7 @@ static void ide_tape_callback(ide_drive_
 
 	rq->errors = err;
 
-	if (uptodate == 0)
-		drive->failed_pc = NULL;
-
-	if (blk_special_request(rq))
-		ide_complete_rq(drive, 0);
-	else
-		ide_end_request(drive, uptodate, 0);
+	return uptodate;
 }
 
 /*
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -619,7 +619,7 @@ struct ide_drive_s {
 	struct ide_atapi_pc *failed_pc;
 
 	/* callback for packet commands */
-	void (*pc_callback)(struct ide_drive_s *, int);
+	int  (*pc_callback)(struct ide_drive_s *, int);
 
 	void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
 	int  (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
--
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