linux-kernel - [PATCH] SUN3/3X Lance trivial fix improved

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Message-ID: <20070206153615.GA12371@cvg>
Date:	Tue, 6 Feb 2007 18:36:15 +0300
From:	"Cyrill V. Gorcunov" <gorcunov@...il.com>
To:	Sam Creasey <sammy@...my.net>
Cc:	linux-kernel-list <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jirislaby@...il.com>
Subject: [PATCH] SUN3/3X Lance trivial fix improved

This patch adds checking for allocated DVMA memory
and granted IRQ line.

Signed-off-by: Cyrill V. Gorcunov <gorcunov@...il.com>

---

Sam, this patch is almost the same I've already sent you
except of some improvements (thanks to Jiri Slaby) like
iounmap(), dvma_free() calls.

 drivers/net/sun3lance.c |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/drivers/net/sun3lance.c b/drivers/net/sun3lance.c
index c62e85d..7bee45b 100644
--- a/drivers/net/sun3lance.c
+++ b/drivers/net/sun3lance.c
@@ -336,13 +336,27 @@ static int __init lance_probe( struct net_device *dev)
 
 	/* XXX - leak? */
 	MEM = dvma_malloc_align(sizeof(struct lance_memory), 0x10000);
+	if (MEM == NULL) {
+#ifdef CONFIG_SUN3
+		iounmap((void __iomem *)ioaddr);
+#endif
+		printk(KERN_WARNING "SUN3 Lance couldn't allocate DVMA memory\n");
+		return 0;
+	}
 
 	lp->iobase = (volatile unsigned short *)ioaddr;
 	dev->base_addr = (unsigned long)ioaddr; /* informational only */
 
 	REGA(CSR0) = CSR0_STOP;
 
-	request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev);
+	if (request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev) < 0) {
+#ifdef CONFIG_SUN3
+		iounmap((void __iomem *)ioaddr);
+#endif
+		dvma_free((void *)MEM);
+		printk(KERN_WARNING "SUN3 Lance unable to allocate IRQ\n");
+		return 0;
+	}
 	dev->irq = (unsigned short)LANCE_IRQ;
 
 
-
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