Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8ba55c5c authored by David Brownell's avatar David Brownell Committed by Tony Lindgren
Browse files

ARM: OMAP: fix false lockdep warnings 



Remove false lockdep warnings about lock recursion when declaring
IRQs as being wake-capable, by marking putting GPIO irq_desc locks
into their own class.

(Thanks to Peter Zijlstra for helping track down such a small
fix to this problem.)

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent b8488fbe

arch/arm/plat-omap/gpio.c

+6 −0
Original line number Diff line number Diff line
@@ -1277,6 +1277,11 @@ static struct clk *gpio_fclks[OMAP34XX_NR_GPIOS]; 
static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];

#endif



/* This lock class tells lockdep that GPIO irqs are in a different

 * category than their parents, so it won't report false recursion.

 */

static struct lock_class_key gpio_lock_class;



static int __init _omap_gpio_init(void)

{

	int i;
@@ -1450,6 +1455,7 @@ static int __init _omap_gpio_init(void) 
#endif

		for (j = bank->virtual_irq_start;

		     j < bank->virtual_irq_start + gpio_count; j++) {

			lockdep_set_class(&irq_desc[j].lock, &gpio_lock_class);

			set_irq_chip_data(j, bank);

			if (bank_is_mpuio(bank))

				set_irq_chip(j, &mpuio_irq_chip);