linux-kernel - [PATCH 3/5] remoteproc: st: Simplify with dev_err

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Message-Id: <20250111-b4-syscon-phandle-args-remoteproc-v1-3-73ed6fafa1e3@linaro.org>
Date: Sat, 11 Jan 2025 19:42:51 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, 
 Patrice Chotard <patrice.chotard@...s.st.com>
Cc: linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 3/5] remoteproc: st: Simplify with dev_err_probe

Use dev_err_probe() to make error code handling simpler and handle
deferred probe.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/remoteproc/st_remoteproc.c | 44 +++++++++++++++++---------------------
 1 file changed, 20 insertions(+), 24 deletions(-)

diff --git a/drivers/remoteproc/st_remoteproc.c b/drivers/remoteproc/st_remoteproc.c
index 5df99bae7131a832c0c03c9bf8619812d9eb570d..d1f35e8a83ba525613ed4e54d2269b7e9f427e46 100644
--- a/drivers/remoteproc/st_remoteproc.c
+++ b/drivers/remoteproc/st_remoteproc.c
@@ -290,26 +290,23 @@ static int st_rproc_parse_dt(struct platform_device *pdev)
 	if (ddata->config->sw_reset) {
 		ddata->sw_reset = devm_reset_control_get_exclusive(dev,
 								   "sw_reset");
-		if (IS_ERR(ddata->sw_reset)) {
-			dev_err(dev, "Failed to get S/W Reset\n");
-			return PTR_ERR(ddata->sw_reset);
-		}
+		if (IS_ERR(ddata->sw_reset))
+			return dev_err_probe(dev, PTR_ERR(ddata->sw_reset),
+					     "Failed to get S/W Reset\n");
 	}
 
 	if (ddata->config->pwr_reset) {
 		ddata->pwr_reset = devm_reset_control_get_exclusive(dev,
 								    "pwr_reset");
-		if (IS_ERR(ddata->pwr_reset)) {
-			dev_err(dev, "Failed to get Power Reset\n");
-			return PTR_ERR(ddata->pwr_reset);
-		}
+		if (IS_ERR(ddata->pwr_reset))
+			return dev_err_probe(dev, PTR_ERR(ddata->pwr_reset),
+					     "Failed to get Power Reset\n");
 	}
 
 	ddata->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(ddata->clk)) {
-		dev_err(dev, "Failed to get clock\n");
-		return PTR_ERR(ddata->clk);
-	}
+	if (IS_ERR(ddata->clk))
+		return dev_err_probe(dev, PTR_ERR(ddata->clk),
+				     "Failed to get clock\n");
 
 	err = of_property_read_u32(np, "clock-frequency", &ddata->clk_rate);
 	if (err) {
@@ -318,10 +315,9 @@ static int st_rproc_parse_dt(struct platform_device *pdev)
 	}
 
 	ddata->boot_base = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
-	if (IS_ERR(ddata->boot_base)) {
-		dev_err(dev, "Boot base not found\n");
-		return PTR_ERR(ddata->boot_base);
-	}
+	if (IS_ERR(ddata->boot_base))
+		return dev_err_probe(dev, PTR_ERR(ddata->boot_base),
+				     "Boot base not found\n");
 
 	err = of_property_read_u32_index(np, "st,syscfg", 1,
 					 &ddata->boot_offset);
@@ -395,32 +391,32 @@ static int st_rproc_probe(struct platform_device *pdev)
 		 */
 		chan = mbox_request_channel_byname(&ddata->mbox_client_vq0, "vq0_rx");
 		if (IS_ERR(chan)) {
-			dev_err(&rproc->dev, "failed to request mbox chan 0\n");
-			ret = PTR_ERR(chan);
+			ret = dev_err_probe(&rproc->dev, PTR_ERR(chan),
+					    "failed to request mbox chan 0\n");
 			goto free_clk;
 		}
 		ddata->mbox_chan[ST_RPROC_VQ0 * MBOX_MAX + MBOX_RX] = chan;
 
 		chan = mbox_request_channel_byname(&ddata->mbox_client_vq0, "vq0_tx");
 		if (IS_ERR(chan)) {
-			dev_err(&rproc->dev, "failed to request mbox chan 0\n");
-			ret = PTR_ERR(chan);
+			ret = dev_err_probe(&rproc->dev, PTR_ERR(chan),
+					    "failed to request mbox chan 0\n");
 			goto free_mbox;
 		}
 		ddata->mbox_chan[ST_RPROC_VQ0 * MBOX_MAX + MBOX_TX] = chan;
 
 		chan = mbox_request_channel_byname(&ddata->mbox_client_vq1, "vq1_rx");
 		if (IS_ERR(chan)) {
-			dev_err(&rproc->dev, "failed to request mbox chan 1\n");
-			ret = PTR_ERR(chan);
+			ret = dev_err_probe(&rproc->dev, PTR_ERR(chan),
+					    "failed to request mbox chan 1\n");
 			goto free_mbox;
 		}
 		ddata->mbox_chan[ST_RPROC_VQ1 * MBOX_MAX + MBOX_RX] = chan;
 
 		chan = mbox_request_channel_byname(&ddata->mbox_client_vq1, "vq1_tx");
 		if (IS_ERR(chan)) {
-			dev_err(&rproc->dev, "failed to request mbox chan 1\n");
-			ret = PTR_ERR(chan);
+			ret = dev_err_probe(&rproc->dev, PTR_ERR(chan),
+					    "failed to request mbox chan 1\n");
 			goto free_mbox;
 		}
 		ddata->mbox_chan[ST_RPROC_VQ1 * MBOX_MAX + MBOX_TX] = chan;

-- 
2.43.0