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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-29 04:04:06 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-29 04:04:06 +0300
commit2f19e7a7e63a04f4bbaf327d9d0e69ac800b2b8f (patch)
tree5e395102e3e0164a3347d9cfd7696505677618ad /include
parent8f0566118e2def0bb8e05de8b19942e9e8111c9a (diff)
parentc949a8e8b43f2c75567269bcc9a50d704ae3c420 (diff)
downloadlinux-2f19e7a7e63a04f4bbaf327d9d0e69ac800b2b8f.tar.xz
Merge tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Mark writes: "spi: Fixes for v4.19 Quite a few fixes for the Renesas drivers in here, plus a fix for the Tegra driver and some documentation fixes for the recently added spi-mem code. The Tegra fix is relatively large but fairly straightforward and mechanical, it runs on probe so it's been reasonably well covered in -next testing." * tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header spi: spi-mem: Add missing description for data.nbytes field spi: rspi: Fix interrupted DMA transfers spi: rspi: Fix invalid SPI use during system suspend spi: sh-msiof: Fix handling of write value for SISTR register spi: sh-msiof: Fix invalid SPI use during system suspend spi: gpio: Fix copy-and-paste error spi: tegra20-slink: explicitly enable/disable clock
Diffstat (limited to 'include')
-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;