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

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@linux.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@linux.com>,
 and Larry Finger <Larry.Finger@lwfinger.net>.


                 reply	other threads:[~2014-02-12 19:54 UTC|newest]

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