From 55db50205adaf14db1bda07d0931b647b794de2f Mon Sep 17 00:00:00 2001 From: "Emilio G. Cota" Date: Fri, 12 Nov 2010 11:14:14 +0000 Subject: [PATCH] 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] [] warn_slowpath_common+0x80/0x98 [ 3236.368044] [] ? __try_stop_module+0x0/0x58 [ 3236.368049] [] warn_slowpath_fmt+0x41/0x43 [ 3236.368054] [] ? __try_stop_module+0x0/0x58 [ 3236.368059] [] driver_unregister+0x36/0x6f [ 3236.368066] [] vme_unregister_driver+0xd/0xf [vme] [ 3236.368072] [] vme_user_exit+0x10/0x1e [vme_user] [ 3236.368076] [] sys_delete_module+0x1ba/0x226 [ 3236.368082] [] ? do_page_fault+0x25d/0x28a [ 3236.368088] [] 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 Acked-by: Martyn Welch Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vme/devices/vme_user.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c index cbe2e11d9af..a6f61162af3 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; } -- 2.11.4.GIT