diff options
Diffstat (limited to 'drivers/ide/ide-taskfile.c')
| -rw-r--r-- | drivers/ide/ide-taskfile.c | 37 |
1 files changed, 10 insertions, 27 deletions
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 2a3c8d498343..73ef6bf5fbcc 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -8,23 +8,6 @@ * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz * * The big the bad and the ugly. - * - * Problems to be fixed because of BH interface or the lack therefore. - * - * Fill me in stupid !!! - * - * HOST: - * General refers to the Controller and Driver "pair". - * DATA HANDLER: - * Under the context of Linux it generally refers to an interrupt handler. - * However, it correctly describes the 'HOST' - * DATA BLOCK: - * The amount of data needed to be transfered as predefined in the - * setup of the device. - * STORAGE ATOMIC: - * The 'DATA BLOCK' associated to the 'DATA HANDLER', and can be as - * small as a single sector or as large as the entire command block - * request. */ #include <linux/module.h> @@ -695,9 +678,6 @@ int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, return ide_do_drive_cmd(drive, &rq, ide_wait); } -/* - * FIXME : this needs to map into at taskfile. <andre@linux-ide.org> - */ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) { int err = 0; @@ -761,9 +741,6 @@ static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf) return ide_do_drive_cmd(drive, &rq, ide_wait); } -/* - * FIXME : this needs to map into at taskfile. <andre@linux-ide.org> - */ int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) { void __user *p = (void __user *)arg; @@ -860,9 +837,14 @@ ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task) case TASKFILE_OUT_DMA: case TASKFILE_IN_DMAQ: case TASKFILE_IN_DMA: - hwif->dma_setup(drive); - hwif->dma_exec_cmd(drive, taskfile->command); - hwif->dma_start(drive); + if (!drive->using_dma) + break; + + if (!hwif->dma_setup(drive)) { + hwif->dma_exec_cmd(drive, taskfile->command); + hwif->dma_start(drive); + return ide_started; + } break; default: @@ -876,7 +858,8 @@ ide_startstop_t flagged_taskfile (ide_drive_t *drive, ide_task_t *task) return task->prehandler(drive, task->rq); } ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL); + return ide_started; } - return ide_started; + return ide_stopped; } |