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ipw2x00: remove the right /proc/net entry

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Commit 27ae60f8f7 ("ipw2x00: replace "ieee80211" with "libipw" where
appropriate") changed DRV_NAME to be "libipw", but didn't properly fix
up the places where it was used to specify the name for the /proc/net/
directory.

For backwards compatibility reasons, that directory name remained
"ieee80211", but due to the DRV_NAME change, the error case printouts
and the cleanup functions now used "libipw" instead.  Which made it all
fail badly.

For example, on module unload as reported by Randy:

  WARNING: at fs/proc/generic.c:816 remove_proc_entry+0x156/0x35e()
  name 'libipw'

because it's trying to unregister a /proc directory that obviously
doesn't even exist.

Clean it all up to use DRV_PROCNAME for the actual /proc directory name.

Reported-and-tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Pavel Roskin <proski@gnu.org>
Cc: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2010-11-05 18:57:04 -07:00
parent d4285bd6be
commit 151f52f09c
1 changed files with 5 additions and 4 deletions
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9
drivers/net/wireless/ipw2x00/libipw_module.c
View File

@ -54,6 +54,7 @@
#define DRV_DESCRIPTION "802.11 data/management/control stack"
#define DRV_NAME "libipw"
#define DRV_PROCNAME "ieee80211"
#define DRV_VERSION LIBIPW_VERSION
#define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>"
@ -293,16 +294,16 @@ static int __init libipw_init(void)
struct proc_dir_entry *e;
libipw_debug_level = debug;
libipw_proc = proc_mkdir("ieee80211", init_net.proc_net);
libipw_proc = proc_mkdir(DRV_PROCNAME, init_net.proc_net);
if (libipw_proc == NULL) {
LIBIPW_ERROR("Unable to create " DRV_NAME
LIBIPW_ERROR("Unable to create " DRV_PROCNAME
" proc directory\n");
return -EIO;
}
e = proc_create("debug_level", S_IRUGO | S_IWUSR, libipw_proc,
&debug_level_proc_fops);
if (!e) {
remove_proc_entry(DRV_NAME, init_net.proc_net);
remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
libipw_proc = NULL;
return -EIO;
}
@ -319,7 +320,7 @@ static void __exit libipw_exit(void)
#ifdef CONFIG_LIBIPW_DEBUG
if (libipw_proc) {
remove_proc_entry("debug_level", libipw_proc);
remove_proc_entry(DRV_NAME, init_net.proc_net);
remove_proc_entry(DRV_PROCNAME, init_net.proc_net);
libipw_proc = NULL;
}
#endif /* CONFIG_LIBIPW_DEBUG */