From: tglx@linutronix.de (Thomas Gleixner)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] drivers: i2c: exynos5: irq spinlock rt-safe
Date: Tue, 25 Aug 2015 23:51:50 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.11.1508252349070.15006@nanos> (raw)
In-Reply-To: <1440489125-20082-1-git-send-email-anders.roxell@linaro.org>
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.
Thanks,
tglx
next prev parent reply other threads:[~2015-08-25 21:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-25 7:52 [PATCH] drivers: i2c: exynos5: irq spinlock rt-safe Anders Roxell
2015-08-25 21:51 ` Thomas Gleixner [this message]
2015-08-31 21:28 ` Anders Roxell
2015-09-03 21:06 ` [PATCHv2] " Anders Roxell
2015-09-03 21:31 ` Thomas Gleixner
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