diff options
| author | Emilio G. Cota <cota@braap.org> | 2010-11-12 11:14:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-16 11:40:14 -0800 |
| commit | 55db50205adaf14db1bda07d0931b647b794de2f (patch) | |
| tree | 6125326773f781632766c576c83ac08a2935445f /drivers/staging/vme | |
| parent | 886953e9b70bcb6913716b49bdf21b69450a7cd6 (diff) | |
staging: vme_user: return the appropriate error code when module_init fails
When init_module fails, 0 is returned anyway; the module is then installed
and oopses when we try to remove it:
[ 3236.368009] WARNING: at drivers/base/driver.c:262 driver_unregister+0x36/0x6f()
[ 3236.368012] Hardware name:
[ 3236.368014] Unexpected driver unregister!
[ 3236.368016] Modules linked in: vme_user(-) vme_tsi148 vme e1000e iTCO_wdt iTCO_vendor_support [last unloaded: vme]
[ 3236.368027] Pid: 16162, comm: rmmod Not tainted 2.6.35 #2
[ 3236.368029] Call Trace:
[ 3236.368037] [<ffffffff81036ea3>] warn_slowpath_common+0x80/0x98
[ 3236.368044] [<ffffffff81060a65>] ? __try_stop_module+0x0/0x58
[ 3236.368049] [<ffffffff81036f4f>] warn_slowpath_fmt+0x41/0x43
[ 3236.368054] [<ffffffff81060a65>] ? __try_stop_module+0x0/0x58
[ 3236.368059] [<ffffffff811e8f78>] driver_unregister+0x36/0x6f
[ 3236.368066] [<ffffffffa004aa44>] vme_unregister_driver+0xd/0xf [vme]
[ 3236.368072] [<ffffffffa00616c8>] vme_user_exit+0x10/0x1e [vme_user]
[ 3236.368076] [<ffffffff810612c1>] sys_delete_module+0x1ba/0x226
[ 3236.368082] [<ffffffff812d6e14>] ? do_page_fault+0x25d/0x28a
[ 3236.368088] [<ffffffff8100202b>] system_call_fastpath+0x16/0x1b
[ 3236.368092] ---[ end trace cab6d88ebc44c1de ]---
The appended fixes it by returning the appropriate error code in module_init
whenever something goes wrong, thus cancelling the insertion of the module.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/vme')
| -rw-r--r-- | drivers/staging/vme/devices/vme_user.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c index cbe2e11d9af7..a6f61162af3f 100644 --- a/drivers/staging/vme/devices/vme_user.c +++ b/drivers/staging/vme/devices/vme_user.c @@ -611,6 +611,7 @@ static int __init vme_user_init(void) if (bus_num == 0) { printk(KERN_ERR "%s: No cards, skipping registration\n", driver_name); + retval = -ENODEV; goto err_nocard; } @@ -629,6 +630,7 @@ static int __init vme_user_init(void) if (ids == NULL) { printk(KERN_ERR "%s: Unable to allocate ID table\n", driver_name); + retval = -ENOMEM; goto err_id; } |