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authorMark Brown <broonie@kernel.org>2016-05-23 11:16:45 (GMT)
committerMark Brown <broonie@kernel.org>2016-05-23 11:16:45 (GMT)
commit38acceff8f02caa8d6b7b4068bb849b619a438d6 (patch)
tree2918c09dffa2b6e130f9f6213a099fa3518b5a0d /drivers/spi/spi.c
parent2dcd0af568b0cf583645c8a317dd12e344b1c72a (diff)
parent8ba811a7d2f0f86a37bd8aaaff35ce1004633430 (diff)
downloadlinux-38acceff8f02caa8d6b7b4068bb849b619a438d6.tar.xz
Merge remote-tracking branch 'spi/topic/core' into spi-next
Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 0239b45..77e6e45 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);
@@ -933,7 +935,7 @@ static int spi_map_msg(struct spi_master *master, struct spi_message *msg)
* spi_transfer_one_message - Default implementation of transfer_one_message()
*
* This is a standard implementation of transfer_one_message() for
- * drivers which impelment a transfer_one() operation. It provides
+ * drivers which implement a transfer_one() operation. It provides
* standard handling of delays and chip select management.
*/
static int spi_transfer_one_message(struct spi_master *master,
@@ -1764,6 +1766,7 @@ struct spi_master *spi_alloc_master(struct device *dev, unsigned size)
master->num_chipselect = 1;
master->dev.class = &spi_master_class;
master->dev.parent = dev;
+ pm_suspend_ignore_children(&master->dev, true);
spi_master_set_devdata(master, &master[1]);
return master;