diff mbox series

[49/75] media: imx: imx7-media-csi: Simplify imx7_csi_rx_fifo_clear()

Message ID 20210105152852.5733-50-laurent.pinchart@ideasonboard.com
State Accepted
Commit bc023b5a333af11752c46afa5969292fc974b7c3
Headers show
Series [01/75] media: imx: Drop dependency on I2C | expand

Commit Message

Laurent Pinchart Jan. 5, 2021, 3:28 p.m. UTC 
There's no need to read the CSICR1 register before each write in
imx7_csi_rx_fifo_clear(). Simplify the function.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/staging/media/imx/imx7-media-csi.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 7871ad55060a..85ab733a2c4f 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -294,14 +294,10 @@  static void imx7_csi_dma_reflash(struct imx7_csi *csi)
 
 static void imx7_csi_rx_fifo_clear(struct imx7_csi *csi)
 {
-	u32 cr1;
+	u32 cr1 = imx7_csi_reg_read(csi, CSI_CSICR1) & ~BIT_FCC;
 
-	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);
-	imx7_csi_reg_write(csi, cr1 & ~BIT_FCC, CSI_CSICR1);
-	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);
+	imx7_csi_reg_write(csi, cr1, CSI_CSICR1);
 	imx7_csi_reg_write(csi, cr1 | BIT_CLR_RXFIFO, CSI_CSICR1);
-
-	cr1 = imx7_csi_reg_read(csi, CSI_CSICR1);
 	imx7_csi_reg_write(csi, cr1 | BIT_FCC, CSI_CSICR1);
 }