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From: rkir@google.com
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, tkjos@google.com,
	Roman Kiryanov <rkir@google.com>
Subject: [PATCH 04/15] platform: goldfish: pipe: Call misc_deregister if init fails
Date: Tue,  2 Oct 2018 15:18:52 -0700	[thread overview]
Message-ID: <20181002221903.19476-4-rkir@google.com> (raw)
In-Reply-To: <20181002221903.19476-1-rkir@google.com>

From: Roman Kiryanov <rkir@google.com>

Undo effects of misc_register if driver's init fails after
misc_register.

Signed-off-by: Roman Kiryanov <rkir@google.com>
---
 drivers/platform/goldfish/goldfish_pipe.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index 4013832f38fb..c386aaf40034 100644
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -844,8 +844,10 @@ static int goldfish_pipe_device_init(struct platform_device *pdev,
 	dev->pipes_capacity = INITIAL_PIPES_CAPACITY;
 	dev->pipes = kcalloc(dev->pipes_capacity, sizeof(*dev->pipes),
 			     GFP_KERNEL);
-	if (!dev->pipes)
+	if (!dev->pipes) {
+		misc_deregister(&dev->miscdev);
 		return -ENOMEM;
+	}
 
 	/*
 	 * We're going to pass two buffers, open_command_params and
@@ -858,6 +860,7 @@ static int goldfish_pipe_device_init(struct platform_device *pdev,
 		__get_free_page(GFP_KERNEL);
 	if (!dev->buffers) {
 		kfree(dev->pipes);
+		misc_deregister(&dev->miscdev);
 		return -ENOMEM;
 	}
 
-- 
2.19.0.605.g01d371f741-goog


  parent reply	other threads:[~2018-10-02 22:20 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-02 22:18 [PATCH 01/15] platform: goldfish: pipe: Remove the goldfish_interrupt_tasklet global variable rkir
2018-10-02 22:18 ` [PATCH 02/15] platform: goldfish: pipe: Remove the goldfish_pipe_miscdev " rkir
2018-10-02 22:18 ` [PATCH 03/15] platform: goldfish: pipe: Remove the goldfish_pipe_dev " rkir
2018-10-02 22:18 ` rkir [this message]
2018-10-02 22:18 ` [PATCH 05/15] platform: goldfish: pipe: Remove redundant casting rkir
2018-10-02 22:18 ` [PATCH 06/15] platform: goldfish: pipe: Move memory allocation from probe to init rkir
2018-10-02 22:18 ` [PATCH 07/15] platform: goldfish: pipe: Return status from "deinit" since "remove" does not do much rkir
2018-10-02 22:18 ` [PATCH 08/15] platform: goldfish: pipe: Add a blank line to separate varibles and code rkir
2018-10-02 22:18 ` [PATCH 09/15] platform: goldfish: pipe: Move goldfish_pipe to goldfish_pipe_v2 rkir
2018-10-02 22:18 ` [PATCH 10/15] platform: goldfish: pipe: Remove the license boilerplate rkir
2018-10-02 22:18 ` [PATCH 11/15] platform: goldfish: pipe: Split the driver to v2 specific and the rest rkir
2018-10-02 22:19 ` [PATCH 12/15] platform: goldfish: pipe: Rename the init function (add "v2") rkir
2018-10-02 22:19 ` [PATCH 13/15] platform: goldfish: pipe: Add a dedicated constant for the device name rkir
2018-10-02 22:19 ` [PATCH 14/15] platform: goldfish: pipe: Rename PIPE_REG to PIPE_V2_REG rkir
2018-10-02 22:19 ` [PATCH 15/15] platform: goldfish: pipe: Add the goldfish_pipe_v1 driver rkir
2018-10-02 22:30 ` [PATCH 01/15] platform: goldfish: pipe: Remove the goldfish_interrupt_tasklet global variable Greg KH
2018-10-02 22:33   ` Roman Kiryanov
2018-10-02 22:42     ` Greg KH

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