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ide: move ide_map_sg() call out of ->dma_setup method (take 2)

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Move ide_map_sg() call from ->dma_setup implementations and
ide_destroy_dmatable() one from *_build_dmatable() to ide_dma_prepare().

There should be no functional changes caused by this patch.

Sergei:
Removed 'use_pio_instead' labels and replaced 'goto' with 'return 0' --
that required no changes to the follow-up patches...

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-03-31 20:15:21 +02:00
parent 8a4a5738ba
commit 11998b3161
8 changed files with 17 additions and 37 deletions
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11
drivers/ide/pmac.c
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@@ -1455,7 +1455,7 @@ static int pmac_ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
"switching to PIO on Ohare chipset\n", drive->name);
pmif->broken_dma_warn = 1;
}
goto use_pio_instead;
return 0;
}
while (cur_len) {
unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
@@ -1463,7 +1463,7 @@ static int pmac_ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
if (count++ >= MAX_DCMDS) {
printk(KERN_WARNING "%s: DMA table too small\n",
drive->name);
goto use_pio_instead;
return 0;
}
st_le16(&table->command, wr? OUTPUT_MORE: INPUT_MORE);
st_le16(&table->req_count, tc);
@@ -1492,9 +1492,6 @@ static int pmac_ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
printk(KERN_DEBUG "%s: empty DMA table?\n", drive->name);
use_pio_instead:
ide_destroy_dmatable(drive);
return 0; /* revert to PIO for this request */
}
@@ -1510,10 +1507,8 @@ static int pmac_ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
u8 unit = drive->dn & 1, ata4 = (pmif->kind == controller_kl_ata4);
u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
if (pmac_ide_build_dmatable(drive, cmd) == 0) {
ide_map_sg(drive, cmd);
if (pmac_ide_build_dmatable(drive, cmd) == 0)
return 1;
}
/* Apple adds 60ns to wrDataSetup on reads */
if (ata4 && (pmif->timings[unit] & TR_66_UDMA_EN)) {