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SubjectRe: [PATCH 2/4][v2] PM / hibernate: Check the success of generating md5 digest before hibernation
Hi Thomas,
On Thu, Sep 13, 2018 at 10:26:39AM +0200, Thomas Gleixner wrote:
> On Wed, 12 Sep 2018, Chen Yu wrote:
> > static bool hibernation_e820_mismatch(void *buf)
> > @@ -306,6 +307,7 @@ static bool hibernation_e820_mismatch(void *buf)
> > int arch_hibernation_header_save(void *addr, unsigned int max_size)
> > {
> > struct restore_data_record *rdr = addr;
> > + int ret = -EINVAL;
>
> What's the point of initializing ret?
>
> > if (max_size < sizeof(struct restore_data_record))
> > return -EOVERFLOW;
> > @@ -333,7 +335,9 @@ int arch_hibernation_header_save(void *addr, unsigned int max_size)
> >
> > rdr->magic = RESTORE_MAGIC;
> >
> > - hibernation_e820_save(rdr->e820_digest);
> > + ret = hibernation_e820_save(rdr->e820_digest);
> > + if (ret)
> > + return ret;
> >
> > return 0;
>
> And what;s the point of ret at all?
>
> return hibernation_e820_save();
>
> is effectivly the same.
>
ret is useless, will change to 'return hibernation_e820_save()' here.
Thanks,
Yu
> Thanks,
>
> tglx

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