From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from po-out-1718.google.com (po-out-1718.google.com [72.14.252.156]) by ozlabs.org (Postfix) with ESMTP id EE4F6DDF7A for ; Fri, 13 Feb 2009 21:37:01 +1100 (EST) Received: by po-out-1718.google.com with SMTP id b23so3023010poe.4 for ; Fri, 13 Feb 2009 02:37:00 -0800 (PST) MIME-Version: 1.0 Date: Fri, 13 Feb 2009 16:07:00 +0530 Message-ID: Subject: Not able to see any output if kernel module loaded for the first time From: Vijay Nikam To: linuxppc-dev@ozlabs.org Content-Type: text/plain; charset=ISO-8859-1 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello All, I am facing perhaps some strange kind of problem. I have mpc8313erdb eval board and wrote the GPIO driver, the driver is just making the assigned GPIO[3] pin high and low. If I load this module first time after bootup or if I make some change in the code and compile and load the module, then I am not able to see any output on the scope but if I load it again then I will be able to see the output on the scopt that GPIO[3] pin has became high and low. Later if I removed the kernel module and load it again then also I am able to see the output on the scope, till I do the reboot or power-off and on. Could anyone let me know why this happening ... thanks ... Kindly please acknowledge ... thank you ... Kind Regards, Vijay Nikam