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path: root/drivers/spi/spi.c
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Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 18cc625d887f..857ee8c407b1 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1596,15 +1596,11 @@ int spi_setup(struct spi_device *spi)
}
EXPORT_SYMBOL_GPL(spi_setup);
-static int __spi_async(struct spi_device *spi, struct spi_message *message)
+static int __spi_validate(struct spi_device *spi, struct spi_message *message)
{
struct spi_master *master = spi->master;
struct spi_transfer *xfer;
- message->spi = spi;
-
- trace_spi_message_submit(message);
-
if (list_empty(&message->transfers))
return -EINVAL;
if (!message->complete)
@@ -1705,6 +1701,18 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message)
}
message->status = -EINPROGRESS;
+
+ return 0;
+}
+
+static int __spi_async(struct spi_device *spi, struct spi_message *message)
+{
+ struct spi_master *master = spi->master;
+
+ message->spi = spi;
+
+ trace_spi_message_submit(message);
+
return master->transfer(spi, message);
}
@@ -1743,6 +1751,10 @@ int spi_async(struct spi_device *spi, struct spi_message *message)
int ret;
unsigned long flags;
+ ret = __spi_validate(spi, message);
+ if (ret != 0)
+ return ret;
+
spin_lock_irqsave(&master->bus_lock_spinlock, flags);
if (master->bus_lock_flag)
@@ -1791,6 +1803,10 @@ int spi_async_locked(struct spi_device *spi, struct spi_message *message)
int ret;
unsigned long flags;
+ ret = __spi_validate(spi, message);
+ if (ret != 0)
+ return ret;
+
spin_lock_irqsave(&master->bus_lock_spinlock, flags);
ret = __spi_async(spi, message);