spi: axiado: fix kernel-doc comments

Running kernel-doc -Wall on the driver reports 7 warnings, all present
since the driver was added in commit e75a6b00ad79 ("spi: axiado: Add
driver for Axiado SPI DB controller"). Two are in spi-axiado.c and
also show up in W=1 builds of drivers/spi:

  Warning: drivers/spi/spi-axiado.c:226 expecting prototype for
  ax_spi_get_rx_byte(). Prototype was for ax_spi_get_rx_byte_for_irq()
  instead
  Warning: drivers/spi/spi-axiado.c:248 This comment starts with
  '/**', but isn't a kernel-doc comment. Refer to
  Documentation/doc-guide/kernel-doc.rst

The other five are for struct ax_spi in spi-axiado.h, seen when
kernel-doc is invoked on the header directly (headers are not scanned
by the build-time kernel-doc checks):

  Warning: drivers/spi/spi-axiado.h:130 Excess struct member 'rxbuf'
  description in 'ax_spi'
  Warning: drivers/spi/spi-axiado.h:130 Excess struct member 'txbuf'
  description in 'ax_spi'
  Warning: drivers/spi/spi-axiado.h:130 struct member 'clk_rate' not
  described in 'ax_spi'
  Warning: drivers/spi/spi-axiado.h:130 struct member 'rx_buf' not
  described in 'ax_spi'
  Warning: drivers/spi/spi-axiado.h:130 struct member 'tx_buf' not
  described in 'ax_spi'

Fix the three underlying defects:

 - The comment on ax_spi_get_rx_byte_for_irq() carries the name of
   ax_spi_get_rx_byte(), from which it was evidently copied when the
   IRQ variant was split out; fix the function name.

 - The comment on ax_spi_process_rx_and_finalize() is opened with the
   kernel-doc /** marker but has no identifier line; turn it into
   proper kernel-doc (identifier line, @ctlr, Return:) since it
   already describes the behavior and the return value.

 - The struct ax_spi comment documents @txbuf and @rxbuf while the
   members are named tx_buf and rx_buf, and does not document
   clk_rate; fix the member names and describe clk_rate.

No functional change.

Assisted-by: Claude:claude-fable-5 [kernel-doc]
Signed-off-by: Babanpreet Singh <bbnpreetsingh@gmail.com>
Acked-By: Tzu-Hao Wei <twei@axiado.com>
Link: https://patch.msgid.link/20260713060807.7-3-bbnpreetsingh@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 9 insertions, 4 deletions

diff --git a/drivers/spi/spi-axiado.c b/drivers/spi/spi-axiado.c
index c4bc7a50d6c9..25561aa9f76f 100644
--- a/drivers/spi/spi-axiado.c
+++ b/drivers/spi/spi-axiado.c
@@ -213,7 +213,7 @@ static void ax_spi_fill_tx_fifo(struct ax_spi *xspi)
 }
 
 /**
- * ax_spi_get_rx_byte - Gets a byte from the RX FIFO buffer
+ * ax_spi_get_rx_byte_for_irq - Gets a byte from the RX FIFO buffer
  * @xspi: Controller private data (struct ax_spi *)
  *
  * This function handles the logic of extracting bytes from the 32-bit RX FIFO.
@@ -246,9 +246,13 @@ static u8 ax_spi_get_rx_byte_for_irq(struct ax_spi *xspi)
 }
 
 /**
+ * ax_spi_process_rx_and_finalize - Process RX bytes and check for completion
+ * @ctlr:	Pointer to spi_controller structure
+ *
  * Helper function to process received bytes and check for transfer completion.
  * This avoids code duplication and centralizes the completion logic.
- * Returns true if the transfer was finalized.
+ *
+ * Return: true if the transfer was finalized.
  */
 static bool ax_spi_process_rx_and_finalize(struct spi_controller *ctlr)
 {
diff --git a/drivers/spi/spi-axiado.h b/drivers/spi/spi-axiado.h
index 6cf0e5bf5879..d24d31c3a446 100644
--- a/drivers/spi/spi-axiado.h
+++ b/drivers/spi/spi-axiado.h
@@ -98,9 +98,10 @@
  * @regs:					Virtual address of the SPI controller registers
  * @ref_clk:					Pointer to the peripheral clock
  * @pclk:					Pointer to the APB clock
+ * @clk_rate:					Reference clock rate in Hz
  * @speed_hz:					Current SPI bus clock speed in Hz
- * @txbuf:					Pointer	to the TX buffer
- * @rxbuf:					Pointer to the RX buffer
+ * @tx_buf:					Pointer	to the TX buffer
+ * @rx_buf:					Pointer to the RX buffer
  * @tx_bytes:					Number of bytes left to transfer
  * @rx_bytes:					Number of bytes requested
  * @tx_fifo_depth:				Depth of the TX FIFO