From: Andrew Donnellan Date: Thu, 18 Feb 2016 01:12:54 +0000 (+1100) Subject: powerpc/powernv: don't create OPAL msglog sysfs entry if memcons init fails X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=88409d0c863b3ba7d9e3090fb46cdce16207a1d8;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git powerpc/powernv: don't create OPAL msglog sysfs entry if memcons init fails 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 Fixes: 9b4fffa14906 ("powerpc/powernv: new function to access OPAL msglog") Signed-off-by: Andrew Donnellan Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/platforms/powernv/opal-msglog.c b/arch/powerpc/platforms/powernv/opal-msglog.c index 59fa6e1cbc9b..39d6ff9e5630 100644 --- a/arch/powerpc/platforms/powernv/opal-msglog.c +++ b/arch/powerpc/platforms/powernv/opal-msglog.c @@ -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"); }