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powerpc/powernv: don't create OPAL msglog sysfs entry if memcons init fails

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When initialising OPAL interfaces, there is a possibility that
opal_msglog_init() may fail to initialise the msglog/memory console.

Fix opal_msglog_sysfs_init() so it doesn't try to create sysfs entry for
the msglog if this occurs.

Suggested-by: Joel Stanley <joel@jms.id.au>
Fixes: 9b4fffa14906 ("powerpc/powernv: new function to access OPAL msglog")
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Andrew Donnellan 2016-02-18 12:12:54 +11:00 committed by Michael Ellerman
parent 56c08e6d22
commit 88409d0c86
1 changed files with 5 additions and 0 deletions
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5
arch/powerpc/platforms/powernv/opal-msglog.c
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@ -128,6 +128,11 @@ void __init opal_msglog_init(void)
void __init opal_msglog_sysfs_init(void)
{
if (!opal_memcons) {
pr_warn("OPAL: message log initialisation failed, not creating sysfs entry\n");
return;
}
if (sysfs_create_bin_file(opal_kobj, &opal_msglog_attr) != 0)
pr_warn("OPAL: sysfs file creation failed\n");
}