staging: axis-fifo: refactor device tree parsing

Refactor the device tree parsing logic in axis_fifo_probe() to reduce
verbosity and simplify error handling.

Remove the verbose error logging and goto logic. Instead, check
of_property_read_u32() return values directly and propagate error codes
immediately. This aligns the driver with modern kernel standards by
removing unnecessary error messages during probe.

Signed-off-by: Gustavo Piaz da Silva <gustavopiazdasilva2102@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/20260223114207.3639-3-gustavopiazdasilva2102@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 17 insertions, 38 deletions

diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
index e54bc4c1d40f..3aa2aa870ea9 100644
--- a/drivers/staging/axis-fifo/axis-fifo.c
+++ b/drivers/staging/axis-fifo/axis-fifo.c
@@ -392,60 +392,39 @@ static int axis_fifo_parse_dt(struct axis_fifo *fifo)
 
 	ret = of_property_read_u32(node, "xlnx,axi-str-rxd-tdata-width",
 				   &value);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,axi-str-rxd-tdata-width property\n");
-		goto end;
-	} else if (value != 32) {
-		dev_err(fifo->dt_device, "xlnx,axi-str-rxd-tdata-width only supports 32 bits\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
+	if (value != 32)
+		return -EINVAL;
 
 	ret = of_property_read_u32(node, "xlnx,axi-str-txd-tdata-width",
 				   &value);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,axi-str-txd-tdata-width property\n");
-		goto end;
-	} else if (value != 32) {
-		dev_err(fifo->dt_device, "xlnx,axi-str-txd-tdata-width only supports 32 bits\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
+	if (value != 32)
+		return -EINVAL;
 
 	ret = of_property_read_u32(node, "xlnx,rx-fifo-depth",
 				   &fifo->rx_fifo_depth);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,rx-fifo-depth property\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
 
 	ret = of_property_read_u32(node, "xlnx,tx-fifo-depth",
 				   &fifo->tx_fifo_depth);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,tx-fifo-depth property\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
 
 	ret = of_property_read_u32(node, "xlnx,use-rx-data",
 				   &fifo->has_rx_fifo);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,use-rx-data property\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
 
 	ret = of_property_read_u32(node, "xlnx,use-tx-data",
 				   &fifo->has_tx_fifo);
-	if (ret) {
-		dev_err(fifo->dt_device, "missing xlnx,use-tx-data property\n");
-		ret = -EIO;
-		goto end;
-	}
+	if (ret)
+		return ret;
 
-end:
-	return ret;
+	return 0;
 }
 
 static int axis_fifo_probe(struct platform_device *pdev)