From cc3b68fea29c3af018734501e166124c8eb04a6c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 15 Mar 2014 16:04:54 +0100 Subject: [PATCH] irqchip: sun4i: Simplify sun4i_irq_ack Now that we only ack irq 0 the code can be simplified a lot. Also switch from read / modify / write to a simple write clear: 1) This is what the android code does (it has a hack for acking irq 0 in its unmask code doing this) 2) read / modify / write simply does not make sense for an irq status register like this, if the other bits are writeable (and the data sheet says they are not) they should be write 1 to clear, since otherwise a read / modify / write can race with a device raising an interrupt and then clear the pending bit unintentionally Signed-off-by: Hans de Goede Acked-by: Maxime Ripard Cc: linux-arm-kernel@lists.infradead.org Cc: linux-sunxi@googlegroups.com Link: http://lkml.kernel.org/r/1394895894-8891-3-git-send-email-hdegoede@redhat.com Signed-off-by: Thomas Gleixner --- Reading git-format-patch failed