From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Wed, 23 Jul 2008 17:55:57 +0000 (+0200)
Subject: ide: fix ide_host_register() return value
X-Git-Tag: v2.6.27-rc1~854^2~25
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0d0020788543febd10ab933bde0fa181b627f4f;p=linux-2.6

ide: fix ide_host_register() return value

Fix ide_host_register() to fail only if all ports cannot be registered.

While at it:

* Use host->ports[] instead of ide_hwifs[] and remove idx[].

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 17a104b95d..3226128237 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1574,19 +1574,16 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 		      hw_regs_t **hws)
 {
 	ide_hwif_t *hwif, *mate = NULL;
-	u8 idx[MAX_HWIFS];
-	int i, rc = 0;
+	int i, j = 0;
 
 	for (i = 0; i < MAX_HWIFS; i++) {
-		idx[i] = host->ports[i] ? host->ports[i]->index : 0xff;
+		hwif = host->ports[i];
 
-		if (idx[i] == 0xff) {
+		if (hwif == NULL) {
 			mate = NULL;
 			continue;
 		}
 
-		hwif = &ide_hwifs[idx[i]];
-
 		ide_init_port_hw(hwif, hws[i]);
 		ide_port_apply_params(hwif);
 
@@ -1608,10 +1605,10 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 	}
 
 	for (i = 0; i < MAX_HWIFS; i++) {
-		if (idx[i] == 0xff)
-			continue;
+		hwif = host->ports[i];
 
-		hwif = &ide_hwifs[idx[i]];
+		if (hwif == NULL)
+			continue;
 
 		if (ide_probe_port(hwif) == 0)
 			hwif->present = 1;
@@ -1625,19 +1622,20 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 	}
 
 	for (i = 0; i < MAX_HWIFS; i++) {
-		if (idx[i] == 0xff)
-			continue;
+		hwif = host->ports[i];
 
-		hwif = &ide_hwifs[idx[i]];
+		if (hwif == NULL)
+			continue;
 
 		if (hwif_init(hwif) == 0) {
 			printk(KERN_INFO "%s: failed to initialize IDE "
 					 "interface\n", hwif->name);
 			hwif->present = 0;
-			rc = -1;
 			continue;
 		}
 
+		j++;
+
 		if (hwif->present)
 			ide_port_setup_devices(hwif);
 
@@ -1648,10 +1646,10 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 	}
 
 	for (i = 0; i < MAX_HWIFS; i++) {
-		if (idx[i] == 0xff)
-			continue;
+		hwif = host->ports[i];
 
-		hwif = &ide_hwifs[idx[i]];
+		if (hwif == NULL)
+			continue;
 
 		if (hwif->chipset == ide_unknown)
 			hwif->chipset = ide_generic;
@@ -1661,10 +1659,10 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 	}
 
 	for (i = 0; i < MAX_HWIFS; i++) {
-		if (idx[i] == 0xff)
-			continue;
+		hwif = host->ports[i];
 
-		hwif = &ide_hwifs[idx[i]];
+		if (hwif == NULL)
+			continue;
 
 		ide_sysfs_register_port(hwif);
 		ide_proc_register_port(hwif);
@@ -1673,7 +1671,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 			ide_proc_port_register_devices(hwif);
 	}
 
-	return rc;
+	return j ? 0 : -1;
 }
 EXPORT_SYMBOL_GPL(ide_host_register);