diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-03-13 19:05:37 +0300 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2015-03-30 11:43:51 +0300 |
| commit | 14517564795a5cd22e2da3119037f9883383fae9 (patch) | |
| tree | 3c0d182b371855866cfd09a5110adab26b6479a4 /arch/arm/mach-imx/gpc.c | |
| parent | e33b67523f556aa7ddb09f1c7fa4de5c080670c9 (diff) | |
| download | linux-14517564795a5cd22e2da3119037f9883383fae9.tar.xz | |
ARM: imx6: Warn when an old DT is detected
Now that the GPC has been converted to be a full blown irqchip
(and not a mole on the side of the GIC), booting a new kernel
with an old DT is likely to result in a rough ride for the user.
This patch makes sure such a situation is promptly detected and
the user made aware that a DT update is in order.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/gpc.c')
| -rw-r--r-- | arch/arm/mach-imx/gpc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c index 5d32e35fbe47..4d60005e9277 100644 --- a/arch/arm/mach-imx/gpc.c +++ b/arch/arm/mach-imx/gpc.c @@ -275,6 +275,16 @@ static int __init imx_gpc_init(struct device_node *node, */ OF_DECLARE_2(irqchip, imx_gpc, "fsl,imx6q-gpc", imx_gpc_init); +void __init imx_gpc_check_dt(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc"); + if (WARN_ON(!np || + !of_find_property(np, "interrupt-controller", NULL))) + pr_warn("Outdated DT detected, system is about to crash!!!\n"); +} + #ifdef CONFIG_PM_GENERIC_DOMAINS static void _imx6q_pm_pu_power_off(struct generic_pm_domain *genpd) |