linux-kernel - [PATCH] Enabled pstore write for powerpc

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Message-Id: <1493292794-13166-1-git-send-email-ankit@linux.vnet.ibm.com>
Date:   Thu, 27 Apr 2017 17:03:13 +0530
From:   Ankit Kumar <ankit@...ux.vnet.ibm.com>
To:     keescook@...omium.org, anton@...msg.org, ccross@...roid.com,
        tony.luck@...el.com, xinhui.pan@...ux.vnet.ibm.com
Cc:     benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
        andrew.donnellan@....ibm.com, dja@...ens.net, geliangtang@....com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        mahesh@...ux.vnet.ibm.com, Ankit Kumar <ankit@...ux.vnet.ibm.com>
Subject: [PATCH] Enabled pstore write for powerpc

After commit c950fd6f201a kernel registers pstore write based on flag set.
Pstore write for powerpc is broken as flags(PSTORE_FLAGS_DMESG) is not set for
powerpc architecture. On panic, kernel doesn't write message to
/fs/pstore/dmesg*(Entry doesn't gets created at all).

This patch enables pstore write for powerpc architecture by setting
PSTORE_FLAGS_DMESG flag.

Fixes:c950fd6f201a pstore: Split pstore fragile flags
Signed-off-by: Ankit Kumar <ankit@...ux.vnet.ibm.com>
---

 arch/powerpc/kernel/nvram_64.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index d5e2b83..021db31 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -561,6 +561,7 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
 static struct pstore_info nvram_pstore_info = {
 	.owner = THIS_MODULE,
 	.name = "nvram",
+	.flags = PSTORE_FLAGS_DMESG,
 	.open = nvram_pstore_open,
 	.read = nvram_pstore_read,
 	.write = nvram_pstore_write,
-- 
2.7.4