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[PATCH] libata: convert ATAPI_ENABLE_DMADIR to module parameter

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Convert the ATAPI_ENABLE_DMADIR compile time option needed
by some SATA-PATA bridge to runtime module parameter.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Albert Lee 2006-04-04 10:57:18 +08:00 committed by Jeff Garzik
parent c16226a1c7
commit 95de719adc
4 changed files with 7 additions and 5 deletions
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4
drivers/scsi/libata-core.c
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@ -76,6 +76,10 @@ int atapi_enabled = 1;
module_param(atapi_enabled, int, 0444);
MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
int atapi_dmadir = 0;
module_param(atapi_dmadir, int, 0444);
MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)");
int libata_fua = 0;
module_param_named(fua, libata_fua, int, 0444);
MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)");

6
drivers/scsi/libata-scsi.c
View file

@ -2163,11 +2163,9 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
qc->tf.protocol = ATA_PROT_ATAPI_DMA;
qc->tf.feature |= ATAPI_PKT_DMA;
#ifdef ATAPI_ENABLE_DMADIR
/* some SATA bridges need us to indicate data xfer direction */
if (cmd->sc_data_direction != DMA_TO_DEVICE)
if (atapi_dmadir && (cmd->sc_data_direction != DMA_TO_DEVICE))
/* some SATA bridges need us to indicate data xfer direction */
qc->tf.feature |= ATAPI_DMADIR;
#endif
}
qc->nbytes = cmd->bufflen;

1
drivers/scsi/libata.h
View file

@ -41,6 +41,7 @@ struct ata_scsi_args {
/* libata-core.c */
extern int atapi_enabled;
extern int atapi_dmadir;
extern int libata_fua;
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
struct ata_device *dev);

1
include/linux/libata.h
View file

@ -44,7 +44,6 @@
#undef ATA_NDEBUG /* define to disable quick runtime checks */
#undef ATA_ENABLE_PATA /* define to enable PATA support in some
* low-level drivers */
#undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */
/* note: prints function name for you */