linux-kernel - [PATCH] tpm: use devm_add_action_or

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Date:	Mon, 25 Apr 2016 21:46:38 +0100
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Peter Huewe <peterhuewe@....de>,
	Marcel Selhorst <tpmdd@...horst.net>,
	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:	linux-kernel@...r.kernel.org, tpmdd-devel@...ts.sourceforge.net,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH] tpm: use devm_add_action_or_reset

If devm_add_action() fails we are explicitly calling the cleanup function
in the error path. Lets use the helper function devm_add_action_or_reset()
and return directly as we know the cleanup has been done by the helper.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
---
 drivers/char/tpm/tpm-chip.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 5bc530c..aca4505 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -212,11 +212,10 @@ struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
 	if (IS_ERR(chip))
 		return chip;
 
-	rc = devm_add_action(pdev, (void (*)(void *)) put_device, &chip->dev);
-	if (rc) {
-		put_device(&chip->dev);
+	rc = devm_add_action_or_reset(pdev, (void (*)(void *)) put_device,
+				      &chip->dev);
+	if (rc)
 		return ERR_PTR(rc);
-	}
 
 	dev_set_drvdata(pdev, chip);
 
-- 
1.9.1