From: George Kashperko <geo...@znau.edu.ua>
Fix incorrect device reference counting by switch-robo.
Signed-off-by: George Kashperko <geo...@znau.edu.ua>
---
Unfortunately noticed too late that email client of mine word wraps stuff thus
making
patch broken. Hopefully I got rid of it.
--- trunk.24729.orig/package/switch/src/switch-robo.c 2010-12-25
11:19:31.000000000 +0200
+++ trunk.24729/package/switch/src/switch-robo.c 2011-02-05
03:04:06.000000000 +0200
@@ -301,7 +301,7 @@ static int robo_probe(char *devname)
{
__u32 phyid;
unsigned int i;
- int err;
+ int err = 1;
printk(KERN_INFO PFX "Probing device %s: ", devname);
strcpy(robo.ifr.ifr_name, devname);
@@ -331,7 +331,7 @@ static int robo_probe(char *devname)
(mii->phy_id != ROBO_PHY_ADDR_BCM63XX) &&
(mii->phy_id != ROBO_PHY_ADDR_TG3)) {
printk("Invalid phy address (%d)\n", mii->phy_id);
- return 1;
+ goto done;
}
robo.use_et = 0;
/* The robo has a fixed PHY address that is different from the
@@ -344,7 +344,7 @@ static int robo_probe(char *devname)
if (phyid == 0xffffffff || phyid == 0x55210022) {
printk("No Robo switch in managed mode found, phy_id =
0x%08x\n", phyid);
- return 1;
+ goto done;
}
/* Get the device ID */
@@ -361,11 +361,18 @@ static int robo_probe(char *devname)
robo_switch_reset();
err = robo_switch_enable();
if (err)
- return err;
+ goto done;
+ err = 0;
printk("found a 5%s%x!%s\n", robo.devid & 0xff00 ? "" : "3", robo.devid,
robo.is_5350 ? " It's a 5350." : "");
- return 0;
+
+done:
+ if (err) {
+ dev_put(robo.dev);
+ robo.dev = NULL;
+ }
+ return err;
}
@@ -610,6 +617,8 @@ static int __init robo_init(void)
static void __exit robo_exit(void)
{
switch_unregister_driver(DRIVER_NAME);
+ if (robo.dev)
+ dev_put(robo.dev);
kfree(robo.device);
}
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