There are few drivers that use the same pattern to check if the transfer
is DMA mapped or not. Provide a helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/spi/internals.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/internals.h b/drivers/spi/internals.h
index 4a28a8395552..47a87c2a6979 100644
--- a/drivers/spi/internals.h
+++ b/drivers/spi/internals.h
@@ -40,4 +40,12 @@ static inline void spi_unmap_buf(struct spi_controller *ctlr,
}
#endif /* CONFIG_HAS_DMA */
+static inline bool spi_xfer_is_dma_mapped(struct spi_controller *ctlr,
+ struct spi_device *spi,
+ struct spi_transfer *xfer)
+{
+ return ctlr->can_dma && ctlr->can_dma(ctlr, spi, xfer) &&
+ ctlr->cur_msg_mapped;
+}
+
#endif /* __LINUX_SPI_INTERNALS_H */
--
2.43.0.rc1.1336.g36b5255a03ac
