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SubjectRe: [PATCH 2/2] ARM: davinci: PM: Do not free useful resources in normal path in 'davinci_pm_init'


Am 13.05.2017 13:40, schrieb Christophe JAILLET:
> This looks spurious to iounmap resources in the normal path of this init
> function.
> The 3 ioremap'ed fields of 'pm_config' can be accessed later on in other
> functions, so it is likely that we should return 'success' before unrolling
> everything.
>
> Fixes: aa9aa1ec2df6 ("ARM: davinci: PM: rework init, remove platform device")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> This patch is just a *guess*. The end of the function looks more like a
> error handling code rather than a normal path.
> ---
> arch/arm/mach-davinci/pm.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-davinci/pm.c b/arch/arm/mach-davinci/pm.c
> index d282b0783ecf..163d865abbf9 100644
> --- a/arch/arm/mach-davinci/pm.c
> +++ b/arch/arm/mach-davinci/pm.c
> @@ -161,6 +161,7 @@ int __init davinci_pm_init(void)
> davinci_cpu_suspend_sz);
>
> suspend_set_ops(&davinci_pm_ops);
> + return 0;
>
> no_sram_mem:
> iounmap(pm_config.ddrpsc_reg_base);


looks like, but that would mean that is wrong also:

davinci_sram_suspend = sram_alloc(davinci_cpu_suspend_sz, NULL);
if (!davinci_sram_suspend) {
pr_err("PM: cannot allocate SRAM memory\n");
return -ENOMEM;
}

what means 1 iounmap missing.

re,
wh

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