| Message ID | 1461577442-8853-2-git-send-email-vigneshr@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index a7ab330d0640..82126bbe69cf 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -717,9 +717,11 @@ static int spi_map_buf(struct spi_master *master, struct device *dev, if (vmalloced_buf) { desc_len = min_t(int, max_seg_size, PAGE_SIZE); sgs = DIV_ROUND_UP(len + offset_in_page(buf), desc_len); - } else { + } else if (virt_addr_valid(buf)) { desc_len = min_t(int, max_seg_size, master->max_dma_len); sgs = DIV_ROUND_UP(len, desc_len); + } else { + return -EINVAL; } ret = sg_alloc_table(sgt, sgs, GFP_KERNEL);
Current spi_map_buf() implementation supports creates sg_table for vmalloc'd and kmalloc'd buffers. Therefore return error if kmap'd buffer (or any other buffer) is passed to spi_map_buf(). Signed-off-by: Vignesh R <vigneshr@ti.com> --- v2: New patch drivers/spi/spi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)