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ide: add "hdx=nodma" kernel parameter

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* 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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-10-16 22:29:58 +02:00
parent 9ff6f72f43
commit c223701cf6
4 changed files with 9 additions and 5 deletions
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7
drivers/ide/ide.c
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@ -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;