linux-kernel - [PATCH] block: add abort on failure

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Date:	Fri,  8 Aug 2014 10:20:50 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Joshua Morris <josh.h.morris@...ibm.com>,
	Jeff Moyer <jmoyer@...hat.com>
Cc:	kernel-janitors@...r.kernel.org,
	Philip Kelleher <pjk1939@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] block: add abort on failure

From: Julia Lawall <Julia.Lawall@...6.fr>

Initializing card seems to be critical to the rest of the probe process, so
abort the probe function if the calls to rsxx_load_config and
rsxx_get_num_targets do not succeed.

Suggested by Jeff Moyer.

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/block/rsxx/core.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index a8de2ee..ae2805b 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -915,15 +915,19 @@ static int rsxx_pci_probe(struct pci_dev *dev,
 
 	/************* Load Card Config *************/
 	st = rsxx_load_config(card);
-	if (st)
+	if (st) {
 		dev_err(CARD_TO_DEV(card),
 			"Failed loading card config\n");
+		goto failed_dma_setup;
+	}
 
 	/************* Setup DMA Engine *************/
 	st = rsxx_get_num_targets(card, &card->n_targets);
-	if (st)
+	if (st) {
 		dev_info(CARD_TO_DEV(card),
 			"Failed reading the number of DMA targets\n");
+		goto failed_dma_setup;
+	}
 
 	card->ctrl = kzalloc(card->n_targets * sizeof(*card->ctrl), GFP_KERNEL);
 	if (!card->ctrl) {

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