linux-kernel - [PATCH] OPP: Properly propagate error along when failing to get icc

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Date:   Mon, 26 Jun 2023 08:46:46 -0500
From:   Andrew Halaney <ahalaney@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-pm@...r.kernel.org, sboyd@...nel.org, nm@...com,
        vireshk@...nel.org, Andrew Halaney <ahalaney@...hat.com>,
        kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...aro.org>
Subject: [PATCH] OPP: Properly propagate error along when failing to get icc_path

fa155f4f8348 ("OPP: Use dev_err_probe() when failing to get icc_path")
failed to actually use the error it was trying to log:

    smatch warnings:
    drivers/opp/of.c:516 dev_pm_opp_of_find_icc_paths() warn: passing zero to 'dev_err_probe'

Make sure to use the right error and pass it along.

Fixes: fa155f4f8348 ("OPP: Use dev_err_probe() when failing to get icc_path")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/r/202306262008.guNLgjt6-lkp@intel.com/
Signed-off-by: Andrew Halaney <ahalaney@...hat.com>
---

This slip up was totally my fault, apologies. I've got a "dirty"
working tree (where I made this enhancement while debugging) and a clean
tree for submitting patches along the way. It looks like I made a slight
change in the patch that was sent in the clean tree, then rebuilt and
tested the dirty tree and sent it off.

Won't happen again, embarrassed to admit I sent a patch that was not
properly tested but oh well. Here's a fix.

Thanks,
Andrew

 drivers/opp/of.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 1f0923cc1cd9..ada4963c7cfa 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -513,7 +513,7 @@ int dev_pm_opp_of_find_icc_paths(struct device *dev,
 	for (i = 0; i < num_paths; i++) {
 		paths[i] = of_icc_get_by_index(dev, i);
 		if (IS_ERR(paths[i])) {
-			ret = dev_err_probe(dev, ret, "%s: Unable to get path%d\n", __func__, i);
+			ret = dev_err_probe(dev, PTR_ERR(paths[i]), "%s: Unable to get path%d\n", __func__, i);
 			goto err;
 		}
 	}
-- 
2.40.1