diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2016-03-23 21:10:16 +1100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | e5d55d1abcef09f7440e6211d5bd673baf547630 (patch) | |
| tree | 15cecf89291ecf34f214ed59f79605424511259e /drivers/scsi/NCR5380.c | |
| parent | f825e40b235f4daf1c9017366809d34c7f5c8c7f (diff) | |
ncr5380: Remove BOARD_REQUIRES_NO_DELAY macro
The io_recovery_delay macro is intended to insert a microsecond delay
between the chip register accesses that begin a DMA operation. This
is reportedly needed for some ISA boards.
Reverse the sense of the macro test so that in the common case,
where no delay is required, drivers need not define the macro.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/NCR5380.c')
| -rw-r--r-- | drivers/scsi/NCR5380.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index fc86cde2d28e..014a01f6875f 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -39,12 +39,6 @@ * tagged queueing) */ -#ifdef BOARD_REQUIRES_NO_DELAY -#define io_recovery_delay(x) -#else -#define io_recovery_delay(x) udelay(x) -#endif - /* * Design * @@ -150,6 +144,10 @@ * possible) function may be used. */ +#ifndef NCR5380_io_delay +#define NCR5380_io_delay(x) +#endif + static int do_abort(struct Scsi_Host *); static void do_reset(struct Scsi_Host *); @@ -1468,14 +1466,14 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, */ if (p & SR_IO) { - io_recovery_delay(1); + NCR5380_io_delay(1); NCR5380_write(START_DMA_INITIATOR_RECEIVE_REG, 0); } else { - io_recovery_delay(1); + NCR5380_io_delay(1); NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_DATA); - io_recovery_delay(1); + NCR5380_io_delay(1); NCR5380_write(START_DMA_SEND_REG, 0); - io_recovery_delay(1); + NCR5380_io_delay(1); } /* |