Hi Linus,
Today's linux-next merge of the gpio tree got a conflict in
drivers/gpio/gpiolib.c between commit 324b0398781e ("gpio: Fix
potential NULL handler data in chained irqchip handler") from Linus
Torvalds' tree and commit 3f97d5fcf99c ("gpio: handle also nested
irqchips in the chained handler set-up") from the gpio tree.I fixed it up (see below) and can carry the fix as necessary (no action is required). -- Cheers, Stephen Rothwell [email protected] diff --cc drivers/gpio/gpiolib.c index c68d037de656,6e00c82be142..000000000000 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@@ -413,12 -407,25 +407,25 @@@ void gpiochip_set_chained_irqchip(struc return; } - /* - * The parent irqchip is already using the chip_data for this - * irqchip, so our callbacks simply use the handler_data. - */ - irq_set_handler_data(parent_irq, gpiochip); - irq_set_chained_handler(parent_irq, parent_handler); + if (parent_handler) { + if (gpiochip->can_sleep) { + chip_err(gpiochip, + "you cannot have chained interrupts on a " + "chip that may sleep\n"); + return; + } - irq_set_chained_handler(parent_irq, parent_handler); + /* + * The parent irqchip is already using the chip_data for this + * irqchip, so our callbacks simply use the handler_data. + */ + irq_set_handler_data(parent_irq, gpiochip); ++ irq_set_chained_handler(parent_irq, parent_handler); + } + + /* Set the parent IRQ for all affected IRQs */ + for (offset = 0; offset < gpiochip->ngpio; offset++) + irq_set_parent(irq_find_mapping(gpiochip->irqdomain, offset), + parent_irq); } EXPORT_SYMBOL_GPL(gpiochip_set_chained_irqchip);
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