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DM9000: Use msleep() instead of udelay()

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We can use sleeping functions when reading and writing the
PHY registers, so let us sleep instead of busy waiting for
the PHY.

Note, this also fixes a bug reading the PHY where only 100uS
was being used instead of 150uS

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Ben Dooks 2008-02-05 00:02:08 +00:00 committed by Jeff Garzik
parent 89c8b0e6cd
commit 321f69a4c3
1 changed files with 21 additions and 2 deletions
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23
drivers/net/dm9000.c
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@ -116,6 +116,7 @@ typedef struct board_info {
u8 io_mode; /* 0:word, 2:byte */
u8 phy_addr;
unsigned int flags;
unsigned int in_suspend :1;
int debug_level;
@ -1107,6 +1108,18 @@ dm9000_hash_table(struct net_device *dev)
}
/*
* Sleep, either by using msleep() or if we are suspending, then
* use mdelay() to sleep.
*/
static void dm9000_msleep(board_info_t *db, unsigned int ms)
{
if (db->in_suspend)
mdelay(ms);
else
msleep(ms);
}
/*
* Read a word from phyxcer
*/
@ -1131,7 +1144,7 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg)
writeb(reg_save, db->io_addr);
spin_unlock_irqrestore(&db->lock,flags);
udelay(100); /* Wait read complete */
dm9000_msleep(db, 1); /* Wait read complete */
spin_lock_irqsave(&db->lock,flags);
reg_save = readb(db->io_addr);
@ -1175,7 +1188,7 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value)
writeb(reg_save, db->io_addr);
spin_unlock_irqrestore(&db->lock,flags);
udelay(500); /* Wait write complete */
dm9000_msleep(db, 1); /* Wait write complete */
spin_lock_irqsave(&db->lock,flags);
reg_save = readb(db->io_addr);
@ -1192,8 +1205,12 @@ static int
dm9000_drv_suspend(struct platform_device *dev, pm_message_t state)
{
struct net_device *ndev = platform_get_drvdata(dev);
board_info_t *db;
if (ndev) {
db = (board_info_t *) ndev->priv;
db->in_suspend = 1;
if (netif_running(ndev)) {
netif_device_detach(ndev);
dm9000_shutdown(ndev);
@ -1216,6 +1233,8 @@ dm9000_drv_resume(struct platform_device *dev)
netif_device_attach(ndev);
}
db->in_suspend = 0;
}
return 0;
}