linux-kernel - [PATCH] cx88: Missing failure checks

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Date:	Thu, 26 Mar 2009 20:44:38 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	linux-kernel@...r.kernel.org, mchehab@...radead.org
Subject: [PATCH] cx88: Missing failure checks

The ioremap one was reported in October 2007 (Bug 9146), the kmalloc one
was blindingly obvious while looking at the ioremap one

The bug suggests some other configuration for lots of I/O memory (32MB per
device is ioremapped) but I'll leave that to the real maintainers

Signed-off-by: Alan Cox <alan@...rguk.ukuu.org.uk>
---

 drivers/media/video/cx88/cx88-cards.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)


diff --git a/drivers/media/video/cx88/cx88-cards.c b/drivers/media/video/cx88/cx88-cards.c
index 733ede3..2fa02cf 100644
--- a/drivers/media/video/cx88/cx88-cards.c
+++ b/drivers/media/video/cx88/cx88-cards.c
@@ -3089,6 +3089,8 @@ struct cx88_core *cx88_core_create(struct pci_dev *pci, int nr)
 	int i;
 
 	core = kzalloc(sizeof(*core), GFP_KERNEL);
+	if (core == NULL)
+		return NULL;
 
 	atomic_inc(&core->refcount);
 	core->pci_bus  = pci->bus->number;
@@ -3110,6 +3112,11 @@ struct cx88_core *cx88_core_create(struct pci_dev *pci, int nr)
 	core->lmmio = ioremap(pci_resource_start(pci, 0),
 			      pci_resource_len(pci, 0));
 	core->bmmio = (u8 __iomem *)core->lmmio;
+	
+	if (core->lmmio == NULL) {
+		kfree(core);
+		return NULL;
+	}
 
 	/* board config */
 	core->boardnr = UNSET;

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