linux-kernel - Re: [PATCH 3/3] ide: remove IDE_*

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Date:	Fri, 29 Feb 2008 23:31:07 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Borislav Petkov <petkovbb@...il.com>
Subject: Re: [PATCH 3/3] ide: remove IDE_*_REG macros

Bartlomiej Zolnierkiewicz wrote:

> * Add IDE_{ALTSTATUS,IREASON,BCOUNTL,BCOUNTH}_OFFSET defines.

> * Remove IDE_*_REG macros - this results in more readable
>   and slightly smaller code.

> There should be no functional changes caused by this patch.

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

Acked-by: Sergei Shtylyov <sshtylyov@...mvista.com>

> Index: b/drivers/ide/cris/ide-cris.c
> ===================================================================
> --- a/drivers/ide/cris/ide-cris.c
> +++ b/drivers/ide/cris/ide-cris.c
> @@ -228,7 +228,10 @@ cris_ide_fill_descriptor(cris_dma_descr_
>  static void
>  cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int dir,int type,int len)
>  {
> -	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int, IDE_DATA_REG);
> +	ide_hwif_t *hwif = drive->hwif;
> +

    Why insert new line in the declaration block?

> +	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
> +					       hwif->io_ports[IDE_DATA_OFFSET]);
>  	reg_ata_rw_trf_cnt trf_cnt = {0};
>  
>  	mycontext.saved_data = (dma_descr_data*)virt_to_phys(d);
> @@ -264,8 +267,12 @@ cris_ide_wait_dma(int dir)
>  
>  static int cris_dma_test_irq(ide_drive_t *drive)
>  {
> +	ide_hwif_t *hwif = drive->hwif;
>  	int intr = REG_RD_INT(ata, regi_ata, r_intr);
> -	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int, IDE_DATA_REG);
> +

    Same here...

> +	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
> +					       hwif->io_ports[IDE_DATA_OFFSET]);
> +
>  	return intr & (1 << ctrl2.sel) ? 1 : 0;
>  }

[...]

> Index: b/drivers/ide/legacy/ht6560b.c
> ===================================================================
> --- a/drivers/ide/legacy/ht6560b.c
> +++ b/drivers/ide/legacy/ht6560b.c
> @@ -79,7 +79,7 @@
>   * out how they setup those cycle time interfacing values, as they at Holtek
>   * call them. IDESETUP.COM that is supplied with the drivers figures out
>   * optimal values and fetches those values to drivers. I found out that
> - * they use IDE_SELECT_REG to fetch timings to the ide board right after
> + * they use Select register to fetch timings to the ide board right after

    The register is called device/head officially. :-)

> Index: b/drivers/scsi/ide-scsi.c
> ===================================================================
> --- a/drivers/scsi/ide-scsi.c
> +++ b/drivers/scsi/ide-scsi.c
> @@ -275,9 +275,12 @@ static int idescsi_end_request(ide_drive
>  static ide_startstop_t
>  idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
>  {
> +	ide_hwif_t *hwif = drive->hwif;
> +
>  	if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
>  		/* force an abort */
> -		HWIF(drive)->OUTB(WIN_IDLEIMMEDIATE,IDE_COMMAND_REG);
> +		hwif->OUTB(WIN_IDLEIMMEDIATE,
> +			   hwif->io_ports[IDE_COMMAND_OFFSET]);

    Hum hm, why not WIN_DEVICE_RESET? :-O

[...]
> Index: b/include/linux/ide.h
> ===================================================================
> --- a/include/linux/ide.h
> +++ b/include/linux/ide.h
[...]
> @@ -369,7 +355,7 @@ typedef struct ide_drive_s {
>          u8	wcache;		/* status of write cache */

    Spaces again...

>  	u8	acoustic;	/* acoustic management */
>  	u8	media;		/* disk, cdrom, tape, floppy, ... */
> -	u8	ctl;		/* "normal" value for IDE_CONTROL_REG */
> +	u8	ctl;		/* "normal" value for Control register */
>  	u8	ready_stat;	/* min status value for drive ready */
>  	u8	mult_count;	/* current multiple sector setting */
>  	u8	mult_req;	/* requested multiple sector setting */

MBR, Sergei

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