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| author | Alison Wang <b18965@freescale.com> | 2017-05-22 05:05:26 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-09-25 07:25:31 (GMT) |
| commit | d94fe6f3ff600083512a3cac21baba64c64658c0 (patch) | |
| tree | e1778b7069a5c2546112d5c5bbc23064940d2e8f /drivers/mtd | |
| parent | 4780e0e2349632cf395d26423ebe012ea948f337 (diff) | |
| download | linux-d94fe6f3ff600083512a3cac21baba64c64658c0.tar.xz | |
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index bee8fe7..fea7173 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -1072,7 +1072,7 @@ static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from, 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; |