[PATCH v2 03/11] fsl-mc: use helper for safer setting of driver_override

Krzysztof Kozlowski
2022-02-23T19:14:23Z

Use a helper for seting driver_override to reduce amount of duplicated
code.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
drivers/bus/fsl-mc/fsl-mc-bus.c | 22 ++++------------------
1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index 8fd4a356a86e..d93f4f680f82 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -166,8 +166,7 @@ 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;
@@ -175,22 +174,9 @@ static ssize_t driver_override_store(struct device *dev,
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);
+ if (ret)
+ return ret;

return count;
}
--
2.32.0