July 22, 2013
12:28 p.m.
On Mon, 22 Jul 2013 17:14:48 +0530, sandeep kumar said:
While porting the SD card controller driver, i am seeing a kernel panic. While tracing with printk, i am struck at
in arch/arm/mm/dma_mapping.c , Function,
static struct page *__dma_alloc_buffer(struct device *dev, size_t size, gfp_t gfp) { <snip> ..... ptr = page_address(page); memset(ptr, 0, size); dmac_flush_range(ptr, ptr + size); --> struck here
Convince us that the values of page, ptr, and size are correct at this point in the code. And if you can't, fix them so they *are* correct.