On Sun, Feb 01, 2015 at 02:08:50AM +0100, Niklas Cassel wrote:
> Calling mtd_device_parse_register with the same mtd_info
> (e.g. registering several partitions on a single device)
> would add the same reboot notifier twice, causing an
> infinte loop in notifier_chain_register during boot up.
No driver should be calling mtd_device_parse_register() multiple times
on the same mtd_info. Under what context do you see this? What driver?
> Signed-off-by: Niklas Cassel <n...@flawful.org>
> ---
> drivers/mtd/mtdcore.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
> index de79576..98efc1e 100644
> --- a/drivers/mtd/mtdcore.c
> +++ b/drivers/mtd/mtdcore.c
> @@ -556,7 +556,7 @@ int mtd_device_parse_register(struct mtd_info *mtd, const
> char * const *types,
> err = -ENODEV;
> }
>
> - if (mtd->_reboot) {
> + if (mtd->_reboot && !mtd->reboot_notifier.notifier_call) {
> mtd->reboot_notifier.notifier_call = mtd_reboot_notifier;
> register_reboot_notifier(&mtd->reboot_notifier);
> }
Brian
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