From 399e0f4f00adbfdea2122c1daec0d4015f56cc7a Mon Sep 17 00:00:00 2001 From: Virupax Sadashivpetimath Date: Fri, 8 Mar 2013 10:27:05 +0800 Subject: [PATCH] usb: musb: ux500_dma: add missing MEM resource check Fix dma_controller_create() fail path in case memory resource is missing. Acked-by: Linus Walleij Signed-off-by: Virupax Sadashivpetimath Signed-off-by: Fabio Baltieri Signed-off-by: Felipe Balbi --- drivers/usb/musb/ux500_dma.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index c3a584cf01bb..2df9b7d1ddc6 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -374,12 +374,17 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba controller = kzalloc(sizeof(*controller), GFP_KERNEL); if (!controller) - return NULL; + goto kzalloc_fail; controller->private_data = musb; /* Save physical address for DMA controller. */ iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!iomem) { + dev_err(musb->controller, "no memory resource defined\n"); + goto plat_get_fail; + } + controller->phy_base = (dma_addr_t) iomem->start; controller->controller.start = ux500_dma_controller_start; @@ -391,4 +396,9 @@ struct dma_controller *dma_controller_create(struct musb *musb, void __iomem *ba controller->controller.is_compatible = ux500_dma_is_compatible; return &controller->controller; + +plat_get_fail: + kfree(controller); +kzalloc_fail: + return NULL; } -- 2.20.1