diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index de2f2f90d799..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, @@ -1209,7 +1211,7 @@ static void spi_pump_messages(struct kthread_work *work) struct spi_master *master = container_of(work, struct spi_master, pump_messages); - __spi_pump_messages(master, true, false); + __spi_pump_messages(master, true, master->bus_lock_flag); } static int spi_init_queue(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; @@ -2853,7 +2856,7 @@ static int __spi_sync(struct spi_device *spi, struct spi_message *message, */ int spi_sync(struct spi_device *spi, struct spi_message *message) { - return __spi_sync(spi, message, 0); + return __spi_sync(spi, message, spi->master->bus_lock_flag); } EXPORT_SYMBOL_GPL(spi_sync); |