]> git.baikalelectronics.ru Git - kernel.git/commit
mfd: twl4030: Fix chained irq handling on resume from suspend
authorKalle Jokiniemi <kalle.jokiniemi@jollamobile.com>
Tue, 16 Oct 2012 14:59:35 +0000 (17:59 +0300)
committerSamuel Ortiz <sameo@linux.intel.com>
Wed, 21 Nov 2012 16:46:41 +0000 (17:46 +0100)
commit09aa95cade00a0c38a2ffd57d731ba6a19f296a9
tree01a1e4f1405fda435053ae7368c99df92ded1b15
parentaedbd8a5a932b161a14bf07149c12f64866ce295
mfd: twl4030: Fix chained irq handling on resume from suspend

The irqs are enabled one-by-one in pm core resume_noirq phase.
This leads to situation where the twl4030 primary interrupt
handler (PIH) is enabled before the chained secondary handlers
(SIH). As the PIH cannot clear the pending interrupt, and
SIHs have not been enabled yet, a flood of interrupts hangs
the device.

Fixed the issue by setting the SIH irqs with IRQF_EARLY_RESUME
flags, so they get enabled before the PIH.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@jollamobile.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
drivers/mfd/twl4030-irq.c