diff mbox series

[07/10] spi: amd: Check for idle bus before execute opcode

Message ID 20210908113450.788452-8-tanureal@opensource.cirrus.com
State Superseded
Headers show
Series [01/10] regmap: spi: Set regmap max raw r/w from max_transfer_size | expand

Commit Message

Lucas tanure Sept. 8, 2021, 11:34 a.m. UTC 
Check if the bus is not in use before starting the transfer

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
---
 drivers/spi/spi-amd.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/spi/spi-amd.c b/drivers/spi/spi-amd.c
index 97838b57871c..99b2b0ccff08 100644
--- a/drivers/spi/spi-amd.c
+++ b/drivers/spi/spi-amd.c
@@ -115,11 +115,18 @@  static int amd_spi_busy_wait(struct amd_spi *amd_spi)
 	return 0;
 }
 
-static void amd_spi_execute_opcode(struct amd_spi *amd_spi)
+static int amd_spi_execute_opcode(struct amd_spi *amd_spi)
 {
+	int ret;
+
+	ret = amd_spi_busy_wait(amd_spi);
+	if (ret)
+		return ret;
+
 	/* Set ExecuteOpCode bit in the CTRL0 register */
 	amd_spi_setclear_reg32(amd_spi, AMD_SPI_CTRL0_REG, AMD_SPI_EXEC_CMD, AMD_SPI_EXEC_CMD);
-	amd_spi_busy_wait(amd_spi);
+
+	return 0;
 }
 
 static int amd_spi_master_setup(struct spi_device *spi)