Messages in this thread Patch in this message | | | From | Clément Léger <> | Subject | [PATCH] clk: at91: check pmc node status before registering syscore ops | Date | Mon, 13 Sep 2021 10:26:33 +0200 |
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Currently, at91 pmc driver always register the syscore_ops whatever the status of the pmc node that has been found. When set as secure and disabled, the pmc should not be accessed or this will generate abort exceptions. To avoid this, add a check on node availability before registering the syscore operations.
Signed-off-by: Clément Léger <clement.leger@bootlin.com> --- drivers/clk/at91/pmc.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index 20ee9dccee78..b40035b011d0 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -267,6 +267,11 @@ static int __init pmc_register_ops(void) if (!np) return -ENODEV; + if (!of_device_is_available(np)) { + of_node_put(np); + return -ENODEV; + } + pmcreg = device_node_to_regmap(np); of_node_put(np); if (IS_ERR(pmcreg)) -- 2.33.0
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