Axel Lin [off-list ref] writes:

The gpio-omap driver has been converted to use generic IRQ chip.
Thus select GENERIC_IRQ_CHIP for TI OMAP1 to fix below build error.

  LD      vmlinux
drivers/built-in.o: In function `omap_mpuio_alloc_gc':
drivers/gpio/gpio-omap.c:1087: undefined reference to `irq_alloc_generic_chip'
drivers/gpio/gpio-omap.c:1100: undefined reference to `irq_setup_generic_chip'
drivers/built-in.o: In function `omap_gpio_show_rev':
drivers/gpio/gpio-omap.c:998: undefined reference to `irq_gc_mask_clr_bit'
drivers/gpio/gpio-omap.c:998: undefined reference to `irq_gc_mask_set_bit'
make: *** [vmlinux] Error 1

Signed-off-by: Axel Lin <redacted>

Thanks, I have a fix for this already queued for v3.0-rc3 series:

        http://marc.info/?l=linux-omap&m=130749135312468&w=2

Kevin