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libata: clean up horkage handling

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Horkage handling had the following problems.

* dev->horkage was positioned after ATA_DEVICE_CLEAR_OFFSET, so it was
  cleared before the device is configured.  This broke
  HORKAGE_DIAGNOSTIC.

* Some used dev->horkage while others called ata_device_blacklisted()
  directly.  This was at best confusing.

This patch moves dev->horkage right after dev->flags and set the field
according to the blacklist during device configuration.  All users
test against dev->horkage.  ata_device_blacklisted() now has only one
user, make it static.  While at it, rename it to ata_dev_blacklisted()
for consistency.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-07-05 13:31:27 +09:00 committed by Jeff Garzik
parent 39ce712806
commit 75683fe715
2 changed files with 9 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/ata/libata-core.c
View file

@ -71,6 +71,7 @@ static unsigned int ata_dev_init_params(struct ata_device *dev,
u16 heads, u16 sectors);
static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
static void ata_dev_xfermask(struct ata_device *dev);
static unsigned long ata_dev_blacklisted(const struct ata_device *dev);
unsigned int ata_print_id = 1;
static struct workqueue_struct *ata_wq;
@ -1784,7 +1785,7 @@ static void ata_dev_config_ncq(struct ata_device *dev,
desc[0] = '\0';
return;
}
if (ata_device_blacklisted(dev) & ATA_HORKAGE_NONCQ) {
if (dev->horkage & ATA_HORKAGE_NONCQ) {
snprintf(desc, desc_sz, "NCQ (not used)");
return;
}
@ -1833,6 +1834,9 @@ int ata_dev_configure(struct ata_device *dev)
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __FUNCTION__);
/* set horkage */
dev->horkage |= ata_dev_blacklisted(dev);
/* let ACPI work its magic */
rc = ata_acpi_on_devcfg(dev);
if (rc)
@ -2008,7 +2012,7 @@ int ata_dev_configure(struct ata_device *dev)
dev->max_sectors = ATA_MAX_SECTORS;
}
if (ata_device_blacklisted(dev) & ATA_HORKAGE_MAX_SEC_128)
if (dev->horkage & ATA_HORKAGE_MAX_SEC_128)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
dev->max_sectors);
@ -3775,7 +3779,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ }
};
unsigned long ata_device_blacklisted(const struct ata_device *dev)
static unsigned long ata_dev_blacklisted(const struct ata_device *dev)
{
unsigned char model_num[ATA_ID_PROD_LEN + 1];
unsigned char model_rev[ATA_ID_FW_REV_LEN + 1];
@ -3805,7 +3809,7 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
if ((dev->ap->flags & ATA_FLAG_PIO_POLLING) &&
(dev->flags & ATA_DFLAG_CDB_INTR))
return 1;
return (ata_device_blacklisted(dev) & ATA_HORKAGE_NODMA) ? 1 : 0;
return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0;
}
/**
@ -6918,7 +6922,6 @@ EXPORT_SYMBOL_GPL(ata_host_resume);
EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string);
EXPORT_SYMBOL_GPL(ata_id_to_dma_mode);
EXPORT_SYMBOL_GPL(ata_device_blacklisted);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy);

3
include/linux/libata.h
View file

@ -434,6 +434,7 @@ struct ata_device {
struct ata_port *ap;
unsigned int devno; /* 0 or 1 */
unsigned long flags; /* ATA_DFLAG_xxx */
unsigned int horkage; /* List of broken features */
struct scsi_device *sdev; /* attached SCSI device */
#ifdef CONFIG_ATA_ACPI
acpi_handle acpi_handle;
@ -465,7 +466,6 @@ struct ata_device {
/* error history */
struct ata_ering ering;
int spdn_cnt;
unsigned int horkage; /* List of broken features */
};
/* Offset into struct ata_device. Fields above it are maintained
@ -793,7 +793,6 @@ extern void ata_id_string(const u16 *id, unsigned char *s,
extern void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown);
extern unsigned long ata_device_blacklisted(const struct ata_device *dev);
extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
extern void ata_bmdma_start (struct ata_queued_cmd *qc);
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);