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Date: Mon, 16 Feb 2015 14:29:36 +0100 From: Sebastian Andrzej Siewior <bigeasy@...utronix.de> To: Stanislav Meduna <stano@...una.org> Cc: Paul Gortmaker <paul.gortmaker@...driver.com>, zbr@...emap.net, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-rt-users@...r.kernel.org" <linux-rt-users@...r.kernel.org> Subject: Re: w1-gpio: sleeping function called from invalid context * Stanislav Meduna | 2014-04-17 16:18:16 [+0200]: >diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c >index e10acc2..7065486 100644 >--- a/drivers/w1/w1_io.c >+++ b/drivers/w1/w1_io.c >@@ -170,14 +170,14 @@ static u8 w1_read_bit(struct w1_master *dev) > unsigned long flags = 0; > > /* sample timing is critical here */ >- local_irq_save(flags); >+ if(w1_disable_irqs) local_irq_save(flags); > dev->bus_master->write_bit(dev->bus_master->data, 0); > w1_delay(6); > dev->bus_master->write_bit(dev->bus_master->data, 1); > w1_delay(9); > > result = dev->bus_master->read_bit(dev->bus_master->data); >- local_irq_restore(flags); >+ if(w1_disable_irqs) local_irq_restore(flags); > > w1_delay(55); > there is local_irq_save_nort() and its friends. Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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