Merge tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "The main thing this release has been a lot of work on the integration
  with SPI NOR flashes, there's been some specific support for a while
  for controller features designed to make them perform better but it's
  not worked out as well as hoped so the interface has been redesigned
  in a way that will hopefully do better - it's already been adopted by
  a number of additional controllers so things are looking good.

  Otherwise most of the work has been driver specific:

   - Support for better integration with NOR flashes from Boris
     Brezillon and Yogesh Narayan Gaur plus usage of it in several
     drivers.

   - A big cleanup of the Rockchip driver from Emil Renner Berthing.

   - Lots of performance improvements for bcm2835 from Lukas Wunner.

   - Slave mode support for pxa2xx from Lubomir Rintel.

   - Support for Macronix MXIC, Mediatek MT7629 and MT8183, NPCM PSPI,
     and Renesas r8a77470"

* tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (90 commits)
  spi: sh-msiof: Reduce the number of times write to and perform the transmission from FIFO
  spi: sh-msiof: Add r8a774c0 support
  doc: lpspi: Document DT bindings for LPSPI slave mode
  spi: lpspi: Let watermark change with send data length
  spi: lpspi: Add slave mode support
  spi: lpspi: Replace all "master" with "controller"
  spi: imx: drop useless member speed_hz from driver data struct
  spi: imx: rename config callback and add useful parameters
  spi: imx: style fixes
  spi: imx: mx51-ecspi: Move some initialisation to prepare_message hook.
  spi: imx: add a device specific prepare_message callback
  mtd: atmel-quadspi: disallow building on ebsa110
  spi: Update NPCM PSPI controller documentation
  spi: npcm: Modify pspi send function
  spi: Use of_node_name_eq for node name comparisons
  spi: dw-mmio: add ACPI support
  spi: bcm2835: Synchronize with callback on DMA termination
  spi: bcm2835: Speed up FIFO access if fill level is known
  spi: bcm2835: Polish transfer of DMA prologue
  spi: spi-mem: add support for octal mode I/O data transfer
  ...

1 files changed, 11 insertions, 5 deletions

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index adf384323934..d14b407cc800 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -977,7 +977,7 @@ static int sh_msiof_transfer_one(struct spi_master *master,
 			return 0;
 	}
 
-	if (bits <= 8 && len > 15 && !(len & 3)) {
+	if (bits <= 8 && len > 15) {
 		bits = 32;
 		swab = true;
 	} else {
@@ -1038,6 +1038,14 @@ static int sh_msiof_transfer_one(struct spi_master *master,
 		if (rx_buf)
 			rx_buf += n * bytes_per_word;
 		words -= n;
+
+		if (words == 0 && (len % bytes_per_word)) {
+			words = len % bytes_per_word;
+			bits = t->bits_per_word;
+			bytes_per_word = 1;
+			tx_fifo = sh_msiof_spi_write_fifo_8;
+			rx_fifo = sh_msiof_spi_read_fifo_8;
+		}
 	}
 
 	return 0;
@@ -1426,16 +1434,14 @@ MODULE_DEVICE_TABLE(platform, spi_driver_ids);
 #ifdef CONFIG_PM_SLEEP
 static int sh_msiof_spi_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_msiof_spi_priv *p = platform_get_drvdata(pdev);
+	struct sh_msiof_spi_priv *p = dev_get_drvdata(dev);
 
 	return spi_master_suspend(p->master);
 }
 
 static int sh_msiof_spi_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sh_msiof_spi_priv *p = platform_get_drvdata(pdev);
+	struct sh_msiof_spi_priv *p = dev_get_drvdata(dev);
 
 	return spi_master_resume(p->master);
 }