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powerpc/pseries: Improve error code on reconfiguration notifier failure

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Reconfiguration notifier call for device node may fail by several reasons,
but it always assumes kmalloc failures.

This enables reconfiguration notifier call chain to get the actual error
code rather than -ENOMEM by converting all reconfiguration notifier calls
to return encapsulate error code with notifier_from_errno().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Akinobu Mita
2011-06-21 03:35:56 +00:00
committed by Benjamin Herrenschmidt
parent 3aef19f0a1
commit de2780a3d8
4 changed files with 12 additions and 26 deletions
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4
arch/powerpc/platforms/pseries/reconfig.c
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@@ -114,9 +114,7 @@ int pSeries_reconfig_notify(unsigned long action, void *p)
int err = blocking_notifier_call_chain(&pSeries_reconfig_chain,
action, p);
if (err == NOTIFY_BAD)
return -ENOMEM; /* For now, safe to assume kmalloc failure */
return 0;
return notifier_to_errno(err);
}
static int pSeries_reconfig_add_node(const char *path, struct property *proplist)