[PATCH] arm64/dma-mapping: Fix null-pointer check
From: linux@armlinux.org.uk (Russell King - ARM Linux)
Date: 2017-06-10 22:04:04
Also in:
lkml
On Sat, Jun 10, 2017 at 12:41:10PM -0700, Olav Haugan wrote:
quoted hunk ↗ jump to hunk
@@ -149,6 +140,11 @@ static void *__dma_alloc(struct device *dev, size_t size, bool coherent = is_device_dma_coherent(dev);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This re-introduces an instance that you say you're getting rid of...
pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL, false);
+ if (!dev) {
+ WARN_ONCE(1, "Use an actual device structure for DMA allocation\n");
+ return NULL;
+ }
+
size = PAGE_ALIGN(size);
if (!coherent && !gfpflags_allow_blocking(flags)) {-- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.