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 <linus.walleij@linaro.org>
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
index c3a584c..2df9b7d 100644
--- a/drivers/usb/musb/ux500_dma.c
+++ b/drivers/usb/musb/ux500_dma.c
@@ -374,12 +374,17 @@
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 @@
controller->controller.is_compatible = ux500_dma_is_compatible;
return &controller->controller;
+
+plat_get_fail:
+ kfree(controller);
+kzalloc_fail:
+ return NULL;
}