From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: Re: [PATCH] net/cpsw: don't disable_irqs() after an interrupt has been received. Date: Wed, 17 Apr 2013 11:02:48 +0200 Message-ID: <516E6538.8060804@linutronix.de> References: <1366136460-30732-1-git-send-email-bigeasy@linutronix.de> <516E3EED.4000200@ti.com> <516E52EC.60901@linutronix.de> <516E6165.8050908@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Richard Cochran , netdev@vger.kernel.org, "David S. Miller" , Thomas Gleixner To: Mugunthan V N Return-path: Received: from www.linutronix.de ([62.245.132.108]:38051 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753611Ab3DQJCu (ORCPT ); Wed, 17 Apr 2013 05:02:50 -0400 In-Reply-To: <516E6165.8050908@ti.com> Sender: netdev-owner@vger.kernel.org List-ID: On 04/17/2013 10:46 AM, Mugunthan V N wrote: > On 4/17/2013 1:14 PM, Sebastian Andrzej Siewior wrote: >>> I have tested this patch and it hangs the CPU after net open (CPSW >>> init). >> If I remove additionally the napi_schedule() piece then the network is >> dead (as expected) and the system continues to work (and I receive >> interrupts) and the ISR for cpsw is not executed again. What hardware / >> CPU do you have? >> > I am testing on Beagle Bone black. I have here vanila v3.8.4 + cpsw patches which were in net-next. As for the hardware: [ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone [ 0.000000] AM335X ES1.0 (neon ) model name : ARMv7 Processor rev 2 (v7l) CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x3 CPU part : 0xc08 CPU revision : 2 If we do have the same hardware and source why do I have different behavior? Can you send me your .config off-list? > Regards > Mugunthan V N Sebastian