Merge tag 'spi-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This is a very quiet release for SPI, we've got cleanups and minor
  fixes but only a few new driver specific features. The bulk of the
  changes in terms of diffstat are the cleanups, plus one bit of
  performance work for McSPI.

   - Conversions to use devm_clk_get_enabled() and to remove outdated
     terms for controller and device

   - Device mode support for the Renesas CSI

   - Cleanups and improvements to the device tree bindings aimed at
     making validation better

   - PIO FIFO usage for the OMAP2 McSPI, improving performance"

* tag 'spi-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (75 commits)
  spi: omap2-mcspi: Add FIFO support without DMA
  spi: stm32: Explicitly include correct DT includes
  spi: Export acpi_spi_find_controller_by_adev()
  spi: nxp-fspi: use the correct ioremap function
  spi: Don't use flexible array in struct spi_message definition
  spi: bcm2835: add a sentinel at the end of the lookup array
  spi: spi-geni-qcom: Rename the label unmap_if_dma
  spi: rzv2m-csi: Add target mode support
  spi: renesas,rzv2m-csi: Add CSI (SPI) target related property
  spi: spidev: make spidev_class constant
  spi: mpc52xx-psc: Make mpc52xx_psc_spi_transfer_one_message() static
  spi: spi-cadence-quadspi: Fix missing unwind goto warnings
  spi: omap2-mcspi: Fix hardcoded reference clock
  spi: dt-bindings: Make "additionalProperties: true" explicit
  spi: at91-usart: Remove some dead code
  spi: dt-bindings: st,stm32-spi: Move "st,spi-midi-ns" to spi-peripheral-props.yaml
  spi: qup: Vote for interconnect bandwidth to DRAM
  spi: dt-bindings: qup: Document interconnects
  spi: qup: Parse OPP table for DVFS support
  spi: dt-bindings: qup: Document power-domains and OPP
  ...

1 files changed, 14 insertions, 14 deletions

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 7f8b478fdeb3..86825c88b576 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -867,6 +867,7 @@ extern int devm_spi_register_controller(struct device *dev,
 extern void spi_unregister_controller(struct spi_controller *ctlr);
 
 #if IS_ENABLED(CONFIG_ACPI)
+extern struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev);
 extern struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
 						struct acpi_device *adev,
 						int index);
@@ -1086,8 +1087,6 @@ struct spi_transfer {
  * @state: for use by whichever driver currently owns the message
  * @resources: for resource management when the SPI message is processed
  * @prepared: spi_prepare_message was called for the this message
- * @t: for use with spi_message_alloc() when message and transfers have
- *	been allocated together
  *
  * A @spi_message is used to execute an atomic sequence of data transfers,
  * each represented by a struct spi_transfer.  The sequence is "atomic"
@@ -1142,9 +1141,6 @@ struct spi_message {
 
 	/* List of spi_res resources when the SPI message is processed */
 	struct list_head        resources;
-
-	/* For embedding transfers into the memory of the message */
-	struct spi_transfer	t[];
 };
 
 static inline void spi_message_init_no_memset(struct spi_message *m)
@@ -1203,17 +1199,21 @@ struct spi_transfer *xfers, unsigned int num_xfers)
  */
 static inline struct spi_message *spi_message_alloc(unsigned ntrans, gfp_t flags)
 {
-	struct spi_message *m;
+	struct spi_message_with_transfers {
+		struct spi_message m;
+		struct spi_transfer t[];
+	} *mwt;
+	unsigned i;
+
+	mwt = kzalloc(struct_size(mwt, t, ntrans), flags);
+	if (!mwt)
+		return NULL;
 
-	m = kzalloc(struct_size(m, t, ntrans), flags);
-	if (m) {
-		unsigned i;
+	spi_message_init_no_memset(&mwt->m);
+	for (i = 0; i < ntrans; i++)
+		spi_message_add_tail(&mwt->t[i], &mwt->m);
 
-		spi_message_init_no_memset(m);
-		for (i = 0; i < ntrans; i++)
-			spi_message_add_tail(&m->t[i], m);
-	}
-	return m;
+	return &mwt->m;
 }
 
 static inline void spi_message_free(struct spi_message *m)