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cmd640: fix warm-plug support for the secondary interface

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Register secondary interface also when user requested not to probe devices.

While at it:

- remove write-only second_port_toggled variable

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-07-16 20:33:41 +02:00
parent ba1d0de70d
commit a698400a15
1 changed files with 21 additions and 30 deletions
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51
drivers/ide/pci/cmd640.c
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@ -687,9 +687,6 @@ static int cmd640x_init_one(unsigned long base, unsigned long ctl)
*/
static int __init cmd640x_init(void)
{
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
int second_port_toggled = 0;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
int second_port_cmd640 = 0, rc;
const char *bus_type, *port2;
unsigned int index;
@ -778,46 +775,40 @@ static int __init cmd640x_init(void)
put_cmd640_reg(CMDTIM, 0);
put_cmd640_reg(BRST, 0x40);
cmd_hwif1 = ide_find_port();
b = get_cmd640_reg(CNTRL);
/*
* Try to enable the secondary interface, if not already enabled
*/
if (cmd_hwif1 &&
cmd_hwif1->drives[0].noprobe && cmd_hwif1->drives[1].noprobe) {
port2 = "not probed";
if (secondary_port_responding()) {
if ((b & CNTRL_ENA_2ND)) {
second_port_cmd640 = 1;
port2 = "okay";
} else if (cmd640_vlb) {
second_port_cmd640 = 1;
port2 = "alive";
} else
port2 = "not cmd640";
} else {
b = get_cmd640_reg(CNTRL);
put_cmd640_reg(CNTRL, b ^ CNTRL_ENA_2ND); /* toggle the bit */
if (secondary_port_responding()) {
if ((b & CNTRL_ENA_2ND)) {
second_port_cmd640 = 1;
port2 = "okay";
} else if (cmd640_vlb) {
second_port_cmd640 = 1;
port2 = "alive";
} else
port2 = "not cmd640";
second_port_cmd640 = 1;
port2 = "enabled";
} else {
put_cmd640_reg(CNTRL, b ^ CNTRL_ENA_2ND); /* toggle the bit */
if (secondary_port_responding()) {
second_port_cmd640 = 1;
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
second_port_toggled = 1;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
port2 = "enabled";
} else {
put_cmd640_reg(CNTRL, b); /* restore original setting */
port2 = "not responding";
}
put_cmd640_reg(CNTRL, b); /* restore original setting */
port2 = "not responding";
}
}
/*
* Initialize data for secondary cmd640 port, if enabled
*/
if (second_port_cmd640 && cmd_hwif1) {
ide_init_port_hw(cmd_hwif1, &hw[1]);
idx[1] = cmd_hwif1->index;
if (second_port_cmd640) {
cmd_hwif1 = ide_find_port();
if (cmd_hwif1) {
ide_init_port_hw(cmd_hwif1, &hw[1]);
idx[1] = cmd_hwif1->index;
}
}
printk(KERN_INFO "cmd640: %sserialized, secondary interface %s\n",
second_port_cmd640 ? "" : "not ", port2);