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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:58 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:58 +0200 |
| commit | c223701cf6c706f42840631c1ca919a18e6e2800 (patch) | |
| tree | 0ae93a4a36e874d5e1378e5e2d032a81e71350f7 /drivers | |
| parent | 9ff6f72f432364991d68e99cae72cb141c166e70 (diff) | |
| download | blackbird-obmc-linux-c223701cf6c706f42840631c1ca919a18e6e2800.tar.gz blackbird-obmc-linux-c223701cf6c706f42840631c1ca919a18e6e2800.zip | |
ide: add "hdx=nodma" kernel parameter
* Add "hdx=nodma" option allowing user to disallow DMA for a given device.
* Obsolete "ide=nodma" option.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ide/ide-dma.c | 2 | ||||
| -rw-r--r-- | drivers/ide/ide.c | 7 |
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 45fa1ef29d2c..bc57ce6bf0b3 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -759,7 +759,7 @@ static int ide_tune_dma(ide_drive_t *drive) { u8 speed; - if (noautodma || (drive->id->capability & 1) == 0) + if (noautodma || drive->nodma || (drive->id->capability & 1) == 0) return 0; /* consult the list of known "bad" drives */ diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 27c4fe250701..5b090662683e 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -1272,7 +1272,7 @@ static int __init ide_setup(char *s) if (!strcmp(s, "ide=nodma")) { printk(" : Prevented DMA\n"); noautodma = 1; - return 1; + goto obsolete_option; } #ifdef CONFIG_IDEPCI_PCIBUS_ORDER @@ -1306,7 +1306,7 @@ static int __init ide_setup(char *s) */ if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { const char *hd_words[] = { - "none", "noprobe", "nowerr", "cdrom", "minus5", + "none", "noprobe", "nowerr", "cdrom", "nodma", "autotune", "noautotune", "minus8", "swapdata", "bswap", "noflush", "remap", "remap63", "scsi", NULL }; unit = s[2] - 'a'; @@ -1334,6 +1334,9 @@ static int __init ide_setup(char *s) drive->ready_stat = 0; hwif->noprobe = 0; goto done; + case -5: /* nodma */ + drive->nodma = 1; + goto done; case -6: /* "autotune" */ drive->autotune = IDE_TUNE_AUTO; goto obsolete_option; |
