From 5688f212e98a2469583a067fa5da4312ddc4e357 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Date: Tue, 19 Apr 2022 13:34:26 +0200
Subject: fsl-mc: Use driver_set_override() instead of open-coding
Use a helper to set driver_override to reduce the amount of duplicated
code. Make the driver_override field const char, because it is not
modified by the core and it matches other subsystems.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220419113435.246203-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/bus/fsl-mc/fsl-mc-bus.c | 25 ++++---------------------
1 file changed, 4 insertions(+), 21 deletions(-)
(limited to 'drivers/bus')
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index 8fd4a356a86e..ba01c7f4de92 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -166,31 +166,14 @@ static ssize_t driver_override_store(struct device *dev,
const char *buf, size_t count)
{
struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- char *driver_override, *old = mc_dev->driver_override;
- char *cp;
+ int ret;
if (WARN_ON(dev->bus != &fsl_mc_bus_type))
return -EINVAL;
- if (count >= (PAGE_SIZE - 1))
- return -EINVAL;
-
- driver_override = kstrndup(buf, count, GFP_KERNEL);
- if (!driver_override)
- return -ENOMEM;
-
- cp = strchr(driver_override, '\n');
- if (cp)
- *cp = '\0';
-
- if (strlen(driver_override)) {
- mc_dev->driver_override = driver_override;
- } else {
- kfree(driver_override);
- mc_dev->driver_override = NULL;
- }
-
- kfree(old);
+ ret = driver_set_override(dev, &mc_dev->driver_override, buf, count);
+ if (ret)
+ return ret;
return count;
}
--
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