1 --- a/drivers/spi/spi.c
2 +++ b/drivers/spi/spi.c
3 @@ -1013,6 +1013,20 @@ static int spi_transfer_one_message(stru
7 + if (master->transfer_status) {
8 + ret = master->transfer_status(master, ms);
10 + SPI_STATISTICS_INCREMENT_FIELD(statm,
12 + SPI_STATISTICS_INCREMENT_FIELD(stats,
14 + dev_err(&msg->spi->dev,
15 + "SPI transfer status: %d\n",
22 SPI_STATISTICS_INCREMENT_FIELD(statm,
24 --- a/include/linux/spi/spi.h
25 +++ b/include/linux/spi/spi.h
26 @@ -370,6 +370,8 @@ static inline void spi_unregister_driver
27 * transfer_one_message are mutually exclusive; when both
28 * are set, the generic subsystem does not call your
29 * transfer_one callback.
30 + * @transfer_status: This callback allows the driver to return an error code
31 + * in case the scheduled single spi transfer failed.
32 * @handle_err: the subsystem calls the driver to handle an error that occurs
33 * in the generic implementation of transfer_one_message().
34 * @unprepare_message: undo any work done by prepare_message().
35 @@ -546,6 +548,7 @@ struct spi_master {
36 void (*set_cs)(struct spi_device *spi, bool enable);
37 int (*transfer_one)(struct spi_master *master, struct spi_device *spi,
38 struct spi_transfer *transfer);
39 + int (*transfer_status)(struct spi_master *master, unsigned long timeout);
40 void (*handle_err)(struct spi_master *master,
41 struct spi_message *message);