diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-05-05 10:12:55 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-05-05 10:12:55 +0100 |
| commit | f3831a592fe4332a70baad64a860b345398885b7 (patch) | |
| tree | fd27b986295fe5a4f1c0924a804228f829a4c894 /include/linux/spi/spi.h | |
| parent | 376f7839b72ec526173cafb5d8eadfc61e2effdf (diff) | |
| parent | 8560b9321f9050968f393ce1ec67e47c1a0bd5cf (diff) | |
Merge commit 'takashi/topic/asoc' into for-2.6.31
Diffstat (limited to 'include/linux/spi/spi.h')
| -rw-r--r-- | include/linux/spi/spi.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 2cc43fa380c..a0faa18f7b1 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -245,7 +245,12 @@ struct spi_master { */ u16 dma_alignment; - /* setup mode and clock, etc (spi driver may call many times) */ + /* Setup mode and clock, etc (spi driver may call many times). + * + * IMPORTANT: this may be called when transfers to another + * device are active. DO NOT UPDATE SHARED REGISTERS in ways + * which could break those transfers. + */ int (*setup)(struct spi_device *spi); /* bidirectional bulk transfers |