From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: linux-ide@vger.kernel.org
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/5] cmd640: add __set_prefetch_mode()
Date: Mon, 28 Jul 2008 22:41:08 +0200 [thread overview]
Message-ID: <20080728204108.4283.44774.sendpatchset@localhost.localdomain> (raw)
In-Reply-To: <20080728204102.4283.74632.sendpatchset@localhost.localdomain>
Factor out the common code from check_prefetch()
and set_prefetch_mode() to __set_prefetch_mode().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/pci/cmd640.c | 42 ++++++++++++++++++++----------------------
1 file changed, 20 insertions(+), 22 deletions(-)
Index: b/drivers/ide/pci/cmd640.c
===================================================================
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -374,6 +374,21 @@ static void cmd640_dump_regs(void)
}
#endif
+static void __set_prefetch_mode(ide_drive_t *drive, int mode)
+{
+ if (mode) { /* want prefetch on? */
+#if CMD640_PREFETCH_MASKS
+ drive->no_unmask = 1;
+ drive->unmask = 0;
+#endif
+ drive->no_io_32bit = 0;
+ } else {
+ drive->no_unmask = 0;
+ drive->no_io_32bit = 1;
+ drive->io_32bit = 0;
+ }
+}
+
#ifndef CONFIG_BLK_DEV_CMD640_ENHANCED
/*
* Check whether prefetch is on for a drive,
@@ -383,19 +398,10 @@ static void __init check_prefetch(ide_dr
{
u8 b = get_cmd640_reg(prefetch_regs[index]);
- if (b & prefetch_masks[index]) { /* is prefetch off? */
- drive->no_unmask = 0;
- drive->no_io_32bit = 1;
- drive->io_32bit = 0;
- } else {
-#if CMD640_PREFETCH_MASKS
- drive->no_unmask = 1;
- drive->unmask = 0;
-#endif
- drive->no_io_32bit = 0;
- }
+ __set_prefetch_mode(drive, (b & prefetch_masks[index]) ? 0 : 1);
}
#else
+
/*
* Sets prefetch mode for a drive.
*/
@@ -407,19 +413,11 @@ static void set_prefetch_mode(ide_drive_
spin_lock_irqsave(&cmd640_lock, flags);
b = __get_cmd640_reg(reg);
- if (mode) { /* want prefetch on? */
-#if CMD640_PREFETCH_MASKS
- drive->no_unmask = 1;
- drive->unmask = 0;
-#endif
- drive->no_io_32bit = 0;
+ __set_prefetch_mode(drive, mode);
+ if (mode)
b &= ~prefetch_masks[index]; /* enable prefetch */
- } else {
- drive->no_unmask = 0;
- drive->no_io_32bit = 1;
- drive->io_32bit = 0;
+ else
b |= prefetch_masks[index]; /* disable prefetch */
- }
__put_cmd640_reg(reg, b);
spin_unlock_irqrestore(&cmd640_lock, flags);
}
next prev parent reply other threads:[~2008-07-28 20:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-28 20:41 [PATCH 1/5] ide: remove SECTOR_WORDS define Bartlomiej Zolnierkiewicz
2008-07-28 20:41 ` Bartlomiej Zolnierkiewicz [this message]
2008-07-28 20:41 ` [PATCH 3/5] ide: remove read-only ->atapi_overlap field from ide_drive_t Bartlomiej Zolnierkiewicz
2008-07-28 20:41 ` [PATCH 4/5] ide: remove ->supports_dsc_overlap field from ide_driver_t Bartlomiej Zolnierkiewicz
2008-07-28 20:41 ` [PATCH 5/5] ide: factor out HDIO_*_NICE ioctl handling to ide_*_nice_ioctl() Bartlomiej Zolnierkiewicz
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