Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-18 19:05:39 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

clk: at91: check pmc node status before registering syscore ops

Browse Source 
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>
Link: https://lore.kernel.org/r/20210913082633.110168-1-clement.leger@bootlin.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Fixes: b3b02eac33ed ("clk: at91: Add sama5d2 suspend/resume")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Clément Léger 2021-09-13 10:26:33 +02:00 committed by Stephen Boyd
parent 6880fa6c56
commit c405f5c15e
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/clk/at91/pmc.c
View File

@ -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))