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Subject[PATCH 2/2] xirc2ps_cs update
Date
the second patch:
replaces busy_loop with a simple macro doing a schedule_timeout. busy_loop was never
called from interrupt conext anyway, so no need for that. and the sti() is gone.

rgds
-daniel


--- linux-2.5/drivers/net/pcmcia/xirc2ps_cs.c~1 2003-06-09 15:28:22.000000000 -0400
+++ linux-2.5/drivers/net/pcmcia/xirc2ps_cs.c 2003-06-10 14:17:04.000000000 -0400
@@ -431,22 +431,10 @@
#define PutByte(reg,value) outb((value), ioaddr+(reg))
#define PutWord(reg,value) outw((value), ioaddr+(reg))

-static void
-busy_loop(u_long len)
-{
- if (in_interrupt()) {
- u_long timeout = jiffies + len;
- u_long flags;
- save_flags(flags);
- sti();
- while (time_before_eq(jiffies, timeout))
- ;
- restore_flags(flags);
- } else {
- __set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(len);
- }
-}
+#define Wait(n) do { \
+ set_current_state(TASK_UNINTERRUPTIBLE); \
+ schedule_timeout(n); \
+} while (0)

/*====== Functions used for debugging =================================*/
#if defined(PCMCIA_DEBUG) && 0 /* reading regs may change system status */
@@ -1780,12 +1768,12 @@
SelectPage(4);
udelay(1);
PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
- busy_loop(HZ/25); /* wait 40 msec */
+ Wait(HZ/25); /* wait 40 msec */
if (local->mohawk)
PutByte(XIRCREG4_GPR1, 1); /* set bit 0: power up */
else
PutByte(XIRCREG4_GPR1, 1 | 4); /* set bit 0: power up, bit 2: AIC */
- busy_loop(HZ/50); /* wait 20 msec */
+ Wait(HZ/50); /* wait 20 msec */
}

static void
@@ -1799,9 +1787,9 @@

hardreset(dev);
PutByte(XIRCREG_CR, SoftReset); /* set */
- busy_loop(HZ/50); /* wait 20 msec */
+ Wait(HZ/50); /* wait 20 msec */
PutByte(XIRCREG_CR, 0); /* clear */
- busy_loop(HZ/25); /* wait 40 msec */
+ Wait(HZ/25); /* wait 40 msec */
if (local->mohawk) {
SelectPage(4);
/* set pin GP1 and GP2 to output (0x0c)
@@ -1812,7 +1800,7 @@
}

/* give the circuits some time to power up */
- busy_loop(HZ/2); /* about 500ms */
+ Wait(HZ/2); /* about 500ms */

local->last_ptr_value = 0;
local->silicon = local->mohawk ? (GetByte(XIRCREG4_BOV) & 0x70) >> 4
@@ -1831,7 +1819,7 @@
SelectPage(0x42);
PutByte(XIRCREG42_SWC1, 0x80);
}
- busy_loop(HZ/25); /* wait 40 msec to let it complete */
+ Wait(HZ/25); /* wait 40 msec to let it complete */

#ifdef PCMCIA_DEBUG
if (pc_debug) {
@@ -1890,7 +1878,7 @@
printk(KERN_INFO "%s: MII selected\n", dev->name);
SelectPage(2);
PutByte(XIRCREG2_MSR, GetByte(XIRCREG2_MSR) | 0x08);
- busy_loop(HZ/50);
+ Wait(HZ/50);
} else {
printk(KERN_INFO "%s: MII detected; using 10mbs\n",
dev->name);
@@ -1899,7 +1887,7 @@
PutByte(XIRCREG42_SWC1, 0xC0);
else /* enable 10BaseT */
PutByte(XIRCREG42_SWC1, 0x80);
- busy_loop(HZ/25); /* wait 40 msec to let it complete */
+ Wait(HZ/25); /* wait 40 msec to let it complete */
}
if (full_duplex)
PutByte(XIRCREG1_ECR, GetByte(XIRCREG1_ECR | FullDuplex));
@@ -1992,7 +1980,7 @@
* Fixme: Better to use a timer here!
*/
for (i=0; i < 35; i++) {
- busy_loop(HZ/10); /* wait 100 msec */
+ Wait(HZ/10); /* wait 100 msec */
status = mii_rd(ioaddr, 0, 1);
if ((status & 0x0020) && (status & 0x0004))
break;
-
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