| Message ID | 20230712131407.16462-1-duminjie@vivo.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Miri Korenblit |
| Headers | show |
| Series | [v1] drivers/net: intel: iwlwifi: fix two parameters check in iwl_mei_dbgfs_register() | expand |
On Wed Jul 12, 2023 at 3:14 PM CEST, Minjie Du wrote: > Make IS_ERR() judge the debugfs_create_dir() function return > in iwl_mei_dbgfs_register(). > > Signed-off-by: Minjie Du <duminjie@vivo.com> > --- > drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c > index 54445f39f..e5d203a62 100644 > --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c > +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c > @@ -1888,7 +1888,7 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei) > { > mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); > > - if (!mei->dbgfs_dir) > + if (IS_ERR(mei->dbgfs_dir)) > return; same as the other one > > debugfs_create_ulong("status", S_IRUSR,
Hi, On Wed, 2023-07-12 at 21:14 +0800, Minjie Du wrote: > Make IS_ERR() judge the debugfs_create_dir() function return > in iwl_mei_dbgfs_register(). > > Signed-off-by: Minjie Du <duminjie@vivo.com> > --- > drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c > index 54445f39f..e5d203a62 100644 > --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c > +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c > @@ -1888,7 +1888,7 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei) > { > mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); > > - if (!mei->dbgfs_dir) > + if (IS_ERR(mei->dbgfs_dir)) > return; > > debugfs_create_ulong("status", S_IRUSR, The title should be: wifi: iwlwifi: mei: ... Also, why two parameters? It only fixes dbgfs_dir?
"Greenman, Gregory" <gregory.greenman@intel.com> writes: > Hi, > > On Wed, 2023-07-12 at 21:14 +0800, Minjie Du wrote: >> Make IS_ERR() judge the debugfs_create_dir() function return >> in iwl_mei_dbgfs_register(). >> >> Signed-off-by: Minjie Du <duminjie@vivo.com> >> --- >> drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c >> b/drivers/net/wireless/intel/iwlwifi/mei/main.c >> index 54445f39f..e5d203a62 100644 >> --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c >> +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c >> @@ -1888,7 +1888,7 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei) >> { >> mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); >> >> - if (!mei->dbgfs_dir) >> + if (IS_ERR(mei->dbgfs_dir)) >> return; >> >> debugfs_create_ulong("status", S_IRUSR, > > The title should be: > > wifi: iwlwifi: mei: ... > > Also, why two parameters? It only fixes dbgfs_dir? It would be better to just remove the check, from debugfs_create_dir(): * NOTE: it's expected that most callers should _ignore_ the errors returned * by this function. Other debugfs functions handle the fact that the "dentry" * passed to them could be an error and they don't crash in that case. * Drivers should generally work fine even if debugfs fails to init anyway.
diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c index 54445f39f..e5d203a62 100644 --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c @@ -1888,7 +1888,7 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei) { mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mei->dbgfs_dir) + if (IS_ERR(mei->dbgfs_dir)) return; debugfs_create_ulong("status", S_IRUSR,
Make IS_ERR() judge the debugfs_create_dir() function return in iwl_mei_dbgfs_register(). Signed-off-by: Minjie Du <duminjie@vivo.com> --- drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)