layerscape: add 64b/32b target for ls1012ardb device

[openwrt/openwrt.git] / target / linux / layerscape / patches-4.4 / 1112-driver-spi-fsl-quad-Hang-memcpy-Unhandled-fault-alig.patch

diff --git a/target/linux/layerscape/patches-4.4/1112-driver-spi-fsl-quad-Hang-memcpy-Unhandled-fault-alig.patch b/target/linux/layerscape/patches-4.4/1112-driver-spi-fsl-quad-Hang-memcpy-Unhandled-fault-alig.patch
new file mode 100644 (file)
index 0000000..c6311fc
--- /dev/null
+++ b/target/linux/layerscape/patches-4.4/1112-driver-spi-fsl-quad-Hang-memcpy-Unhandled-fault-alig.patch
@@ -0,0 +1,29 @@
+From f1b7824a42505669476f203e126fc26dd1006af2 Mon Sep 17 00:00:00 2001
+From: Yutang Jiang <yutang.jiang@nxp.com>
+Date: Fri, 9 Sep 2016 22:57:55 +0800
+Subject: [PATCH 112/113] driver: spi: fsl-quad: Hang memcpy: Unhandled fault:
+ alignment fault
+
+vmap/iomap based on whether the buffer is in memory region or reserved region.
+However, both map it as non-cacheable memory.
+For armv8 specifically, non-cacheable mapping requests use a memory type
+that has to be accessed aligned to the request size. memcpy() doesn't guarantee
+that. memcpy_toio() can guarantee 4-bytes alignment.
+
+Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com>
+Integrated-by: Yutang Jiang <yutang.jiang@nxp.com>
+---
+ drivers/mtd/spi-nor/fsl-quadspi.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/mtd/spi-nor/fsl-quadspi.c
++++ b/drivers/mtd/spi-nor/fsl-quadspi.c
+@@ -1103,7 +1103,7 @@ static ssize_t fsl_qspi_read(struct spi_
+               len);
+ 
+       /* Read out the data directly from the AHB buffer.*/
+-      memcpy(buf, q->ahb_addr + q->chip_base_addr + from - q->memmap_offs,
++      memcpy_toio(buf, q->ahb_addr + q->chip_base_addr + from - q->memmap_offs,
+               len);
+ 
+       return len;