linux-kernel - [PATCH] fs/pstore: update the backend parameter in pstore module

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Date:	Thu, 26 Mar 2015 10:08:54 +0000
From:	Wang Long <long.wanglong@...wei.com>
To:	<keescook@...omium.org>, <ccross@...roid.com>, <anton@...msg.org>,
	<tony.luck@...el.com>
CC:	<linux-kernel@...r.kernel.org>, <long.wanglong@...wei.com>,
	<peifeiyue@...wei.com>, <marco.stornelli@...il.com>,
	<anton.vorontsov@...aro.org>, <salyzyn@...roid.com>,
	<sergiu@...omium.org>, <morgan.wang@...wei.com>
Subject: [PATCH] fs/pstore: update the backend parameter in pstore module

This patch update the module parameter backend, so it is visible
through /sys/module/pstore/parameters/backend.

For example:
if pstore backend is ramoops, with this patch:
	# cat /sys/module/pstore/parameters/backend
	ramoops
and without this patch:
	# cat /sys/module/pstore/parameters/backend
	(null)

Signed-off-by: Wang Long <long.wanglong@...wei.com>
---
 fs/pstore/platform.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index c4c9a10..a52c218 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -456,6 +456,12 @@ int pstore_register(struct pstore_info *psi)
 		add_timer(&pstore_timer);
 	}
 
+	/*
+	 * Update the module parameter backend, so it is visible
+	 * through /sys/module/pstore/parameters/backend
+	 */
+	backend = psi->name;
+
 	pr_info("Registered %s as persistent store backend\n", psi->name);
 
 	return 0;
-- 
1.8.3.4

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