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authorDave Airlie <airlied@redhat.com>2018-10-04 11:03:34 +1000
committerDave Airlie <airlied@redhat.com>2018-10-04 11:03:34 +1000
commit6004f172b375f5747e89afc62ad3baaf1bebd58a (patch)
tree914fafcc0e373c45c6e0dcc3661dad3a8be5f3d1 /include/linux/spi/spi-mem.h
parent612c6bd5e3f8b67505316805dc15369598f6ff57 (diff)
parent17b57b1883c1285f3d0dc2266e8f79286a7bef38 (diff)
BackMerge v4.19-rc6 into drm-next
I have some pulls based on rc6, and I prefer to have an explicit backmerge. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/spi/spi-mem.h')
-rw-r--r--include/linux/spi/spi-mem.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index b2bd4b4127c4..69ee30456864 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -81,8 +81,10 @@ enum spi_mem_data_dir {
* @dummy.buswidth: number of IO lanes used to transmit the dummy bytes
* @data.buswidth: number of IO lanes used to send/receive the data
* @data.dir: direction of the transfer
- * @data.buf.in: input buffer
- * @data.buf.out: output buffer
+ * @data.nbytes: number of data bytes to send/receive. Can be zero if the
+ * operation does not involve transferring data
+ * @data.buf.in: input buffer (must be DMA-able)
+ * @data.buf.out: output buffer (must be DMA-able)
*/
struct spi_mem_op {
struct {
@@ -105,7 +107,6 @@ struct spi_mem_op {
u8 buswidth;
enum spi_mem_data_dir dir;
unsigned int nbytes;
- /* buf.{in,out} must be DMA-able. */
union {
void *in;
const void *out;