linux-kernel - [PATCH 1/2] bus: bt1-apb: Don't print error on -EPROBE

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Date:   Fri, 10 Jun 2022 11:01:02 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Arnd Bergmann <arnd@...db.de>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        <soc@...nel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] bus: bt1-apb: Don't print error on -EPROBE_DEFER

The Baikal-T1 APB bus driver correctly handles the deferred probe
situation, but still pollutes the system log with a misleading error
message. Let's fix that by using the dev_err_probe() method to print the
log message in case of the clocks/resets request errors.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 drivers/bus/bt1-apb.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/bt1-apb.c b/drivers/bus/bt1-apb.c
index b25ff941e7c7..ac13b5b97107 100644
--- a/drivers/bus/bt1-apb.c
+++ b/drivers/bus/bt1-apb.c
@@ -176,7 +176,8 @@ static int bt1_apb_request_rst(struct bt1_apb *apb)
 
 	apb->prst = devm_reset_control_get_optional_exclusive(apb->dev, "prst");
 	if (IS_ERR(apb->prst)) {
-		dev_warn(apb->dev, "Couldn't get reset control line\n");
+		dev_err_probe(apb->dev, PTR_ERR(apb->prst),
+			      "Couldn't get reset control line\n");
 		return PTR_ERR(apb->prst);
 	}
 
@@ -200,7 +201,8 @@ static int bt1_apb_request_clk(struct bt1_apb *apb)
 
 	apb->pclk = devm_clk_get(apb->dev, "pclk");
 	if (IS_ERR(apb->pclk)) {
-		dev_err(apb->dev, "Couldn't get APB clock descriptor\n");
+		dev_err_probe(apb->dev, PTR_ERR(apb->pclk),
+			      "Couldn't get APB clock descriptor\n");
 		return PTR_ERR(apb->pclk);
 	}
 
-- 
2.35.1