From: Jiri Slaby <jirislaby@gmail.com>
To: Daniel Ribeiro <drwyrm@gmail.com>
Cc: sameo@linux.intel.com, LKML <linux-kernel@vger.kernel.org>,
laforge@openezx.org
Subject: Re: MFD: mutex from ISR in ezx-pcap?
Date: Wed, 01 Jul 2009 08:56:10 +0200 [thread overview]
Message-ID: <4A4B088A.9030905@gmail.com> (raw)
In-Reply-To: <1246352256.18231.408.camel@brutus>
On 06/30/2009 10:57 AM, Daniel Ribeiro wrote:
> Em Ter, 2009-06-30 às 00:11 +0200, Jiri Slaby escreveu:
>> so that
>> pcap_adc_irq shouldn't sleep, right? Or maybe I missed something again...
>
> No. Interrupts are enabled again before pcap_adc_irq() runs.
>
> pcap_isr_work() doesn't call pcap_adc_irq directly, it calls the
> irq_flow_handler, handle_simple_irq(), which needs to run with
> interrupts disabled. Interrupts are enabled again on handle_IRQ_event(),
> as pcap_adc_irq is requested _without_ IRQF_DISABLED.
Correct. Thanks for clarification. I posted at least a lock fix which
made me poke in this all.
prev parent reply other threads:[~2009-07-01 6:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 19:34 MFD: mutex from ISR in ezx-pcap? Jiri Slaby
2009-06-29 20:20 ` Daniel Ribeiro
2009-06-29 22:11 ` Jiri Slaby
2009-06-30 8:57 ` Daniel Ribeiro
2009-07-01 6:56 ` Jiri Slaby [this message]
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