[PATCH 3.15 105/109] gpio: dwapb: drop irq_setup_generic_chip()

From: Greg Kroah-Hartman
Date: Sat Jul 26 2014 - 15:28:34 EST

3.15-stable review patch. If anyone has any objections, please let me know.


From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

commit 11d3d334af07408ce3a68860c40006ddcd343da5 upstream.

The driver calls irq_alloc_domain_generic_chips() which creates a gc and
adds it to gc_list. The driver later then calls irq_setup_generic_chip()
which also initializes the gc and adds it to the gc_list() and this
corrupts the list. Enable LIST_DEBUG and you see the kernel complain.
This isn't required, irq_alloc_domain_generic_chips() did the init.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Tested-by: Alan Tull <delicious.quinoa@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: dann frazier <dann.frazier@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/gpio/gpio-dwapb.c | 3 ---
1 file changed, 3 deletions(-)

--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -260,9 +260,6 @@ static void dwapb_configure_irqs(struct
ct->regs.ack = GPIO_PORTA_EOI;
ct->regs.mask = GPIO_INTMASK;

- irq_setup_generic_chip(irq_gc, IRQ_MSK(port->bgc.gc.ngpio),
irq_set_chained_handler(irq, dwapb_irq_handler);
irq_set_handler_data(irq, gpio);

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