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Date: Mon, 31 Aug 2015 23:28:44 +0200 From: Anders Roxell <anders.roxell@...aro.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: kgene@...nel.org, k.kozlowski@...sung.com, wsa@...-dreams.de, ch.naveen@...sung.com, linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, khilman@...aro.org, linux-rt-users@...r.kernel.org Subject: Re: [PATCH] drivers: i2c: exynos5: irq spinlock rt-safe On 2015-08-25 23:51, Thomas Gleixner wrote: > On Tue, 25 Aug 2015, Anders Roxell wrote: > > > The exynos5_i2c_message_start enables interrupts while holding the i2c > > lock which is sought by the irq handler. If an IRQ is received before > > this lock is released then a deadlock occurs. > > That's crap. The interrupt handler runs in an irq thread as RT forces > all normal interrupts to that. You are right, I will send a v2 with a better changelog. Cheers, Anders -- 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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