linux-kernel - [PATCH] Additional item for rtl8188eu TODO list

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Message-ID: <20140212195432.GA32233@linux.vnet.ibm.com>
Date:	Wed, 12 Feb 2014 11:54:32 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	gregkh@...ux.com, Larry.Finger@...inger.net
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] Additional item for rtl8188eu TODO list

Hello!

The rtw_recv_indicatepkt() function in the file named
drivers/staging/rtl8188eu/os_dep/recv_linux.c has this strange code:

	rcu_read_lock();
	rcu_dereference(padapter->pnetdev->rx_handler_data);
	rcu_read_unlock();

This code has no effect.  Normally, you would assign the result of
rcu_dereference() to some variable, but it is not clear from the
code what variable that would be.  Therefore, this patch applies to
the TODO file instead of the code itself.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

diff --git a/drivers/staging/rtl8188eu/TODO b/drivers/staging/rtl8188eu/TODO
index f7f389c40e71..b574b235b340 100644
--- a/drivers/staging/rtl8188eu/TODO
+++ b/drivers/staging/rtl8188eu/TODO
@@ -9,6 +9,11 @@ TODO:
 - merge Realtek's bugfixes and new features into the driver
 - switch to use LIB80211
 - switch to use MAC80211
+- figure out what to do with this code in rtw_recv_indicatepkt():
+	rcu_read_lock();
+	rcu_dereference(padapter->pnetdev->rx_handler_data);
+	rcu_read_unlock();
+  Perhaps delete it, perhaps assign to some local variable.

 Please send any patches to Greg Kroah-Hartman <gregkh@...ux.com>,
 and Larry Finger <Larry.Finger@...inger.net>.

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