[PATCH] drivers: i2c: exynos5: irq spinlock rt-safe
From: Thomas Gleixner <hidden>
Date: 2015-08-25 21:52:29
Also in:
linux-i2c, linux-rt-users, linux-samsung-soc, lkml
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