clk: at91: pmc: do not continue if compatible not located

pmc_register_ops() is called for all AT91 devices. Return
-ENODEV in case of_find_matching_node() returns NULL.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lkml.kernel.org/r/1588508289-10140-1-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index b71515a..bf0570e 100644 (file)
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -274,6 +274,8 @@ static int __init pmc_register_ops(void)
        struct device_node *np;
 
        np = of_find_matching_node(NULL, sama5d2_pmc_dt_ids);
+       if (!np)
+               return -ENODEV;
 
        pmcreg = device_node_to_regmap(np);
        if (IS_ERR(pmcreg))