linux-kernel - [PATCH 1/1] MIPS: APRP: Fix an issue when device

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Message-Id: <1403209823-6376-1-git-send-email-sebastien.bourdelin@savoirfairelinux.com>
Date:	Thu, 19 Jun 2014 16:30:23 -0400
From:	Sebastien Bourdelin <sebastien.bourdelin@...oirfairelinux.com>
To:	linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>,
	"Steven J. Hill" <Steven.Hill@...tec.com>,
	Deng-Cheng Zhu <dengcheng.zhu@...tec.com>,
	John Crispin <blogic@...nwrt.org>,
	Qais Yousef <Qais.Yousef@...tec.com>
Cc:	linux-kernel@...r.kernel.org,
	Jerome Oufella <jerome.oufella@...oirfairelinux.com>,
	Sebastien Bourdelin <sebastien.bourdelin@...oirfairelinux.com>
Subject: [PATCH 1/1] MIPS: APRP: Fix an issue when device_create() fails.

If a call to device_create() fails for a channel during the initialize
loop, we need to clean the devices entries already created before
leaving.

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@...oirfairelinux.com>
---
 arch/mips/kernel/rtlx-cmp.c | 3 +++
 arch/mips/kernel/rtlx-mt.c  | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/arch/mips/kernel/rtlx-cmp.c b/arch/mips/kernel/rtlx-cmp.c
index 758fb3c..d26dcc4 100644
--- a/arch/mips/kernel/rtlx-cmp.c
+++ b/arch/mips/kernel/rtlx-cmp.c
@@ -77,6 +77,9 @@ int __init rtlx_module_init(void)
 		dev = device_create(mt_class, NULL, MKDEV(major, i), NULL,
 				    "%s%d", RTLX_MODULE_NAME, i);
 		if (IS_ERR(dev)) {
+			while (i--)
+				device_destroy(mt_class, MKDEV(major, i));
+
 			err = PTR_ERR(dev);
 			goto out_chrdev;
 		}
diff --git a/arch/mips/kernel/rtlx-mt.c b/arch/mips/kernel/rtlx-mt.c
index 5a66b97..cb95470 100644
--- a/arch/mips/kernel/rtlx-mt.c
+++ b/arch/mips/kernel/rtlx-mt.c
@@ -103,6 +103,9 @@ int __init rtlx_module_init(void)
 		dev = device_create(mt_class, NULL, MKDEV(major, i), NULL,
 				    "%s%d", RTLX_MODULE_NAME, i);
 		if (IS_ERR(dev)) {
+			while (i--)
+				device_destroy(mt_class, MKDEV(major, i));
+
 			err = PTR_ERR(dev);
 			goto out_chrdev;
 		}
-- 
1.8.3.4

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