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| author | Mark Brown <broonie@kernel.org> | 2016-05-23 14:16:45 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-05-23 14:16:45 +0300 |
| commit | 38acceff8f02caa8d6b7b4068bb849b619a438d6 (patch) | |
| tree | 2918c09dffa2b6e130f9f6213a099fa3518b5a0d /drivers/spi/spi.c | |
| parent | 2dcd0af568b0cf583645c8a317dd12e344b1c72a (diff) | |
| parent | 8ba811a7d2f0f86a37bd8aaaff35ce1004633430 (diff) | |
| download | linux-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.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 0239b45eed92..77e6e45951f4 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; |