diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 6c4c050e6b65..a50f880a5036 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); |