[PATCH 07/40] of: Update of_device_get_modalias()

From: Srinivas Kandagatla
Date: Tue Apr 04 2023 - 13:23:09 EST


From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>

This function only needs a "struct device_node" to work, but for
convenience the author (and only user) of this helper did use a "struct
device" and put it in device.c.

Let's convert this helper to take a "struct device node" instead. This
change asks for two additional changes: renaming it "of_modalias()"
to fit the current naming, and moving it outside of device.c which will
be done in a follow-up commit.

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
drivers/of/device.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/drivers/of/device.c b/drivers/of/device.c
index c91bb5899256..351c505ecb50 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -248,7 +248,7 @@ const void *of_device_get_match_data(const struct device *dev)
}
EXPORT_SYMBOL(of_device_get_match_data);

-static ssize_t of_device_get_modalias(const struct device *dev, char *str, ssize_t len)
+static ssize_t of_modalias(const struct device_node *np, char *str, ssize_t len)
{
const char *compat;
char *c;
@@ -256,19 +256,16 @@ static ssize_t of_device_get_modalias(const struct device *dev, char *str, ssize
ssize_t csize;
ssize_t tsize;

- if ((!dev) || (!dev->of_node) || dev->of_node_reused)
- return -ENODEV;
-
/* Name & Type */
/* %p eats all alphanum characters, so %c must be used here */
- csize = snprintf(str, len, "of:N%pOFn%c%s", dev->of_node, 'T',
- of_node_get_device_type(dev->of_node));
+ csize = snprintf(str, len, "of:N%pOFn%c%s", np, 'T',
+ of_node_get_device_type(np));
tsize = csize;
len -= csize;
if (str)
str += csize;

- of_property_for_each_string(dev->of_node, "compatible", p, compat) {
+ of_property_for_each_string(np, "compatible", p, compat) {
csize = strlen(compat) + 1;
tsize += csize;
if (csize > len)
@@ -293,7 +290,10 @@ int of_device_request_module(struct device *dev)
ssize_t size;
int ret;

- size = of_device_get_modalias(dev, NULL, 0);
+ if (!dev || !dev->of_node)
+ return -ENODEV;
+
+ size = of_modalias(dev->of_node, NULL, 0);
if (size < 0)
return size;

@@ -304,7 +304,7 @@ int of_device_request_module(struct device *dev)
if (!str)
return -ENOMEM;

- of_device_get_modalias(dev, str, size);
+ of_modalias(dev->of_node, str, size);
str[size - 1] = '\0';
ret = request_module(str);
kfree(str);
@@ -321,7 +321,12 @@ EXPORT_SYMBOL_GPL(of_device_request_module);
*/
ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len)
{
- ssize_t sl = of_device_get_modalias(dev, str, len - 2);
+ ssize_t sl;
+
+ if (!dev || !dev->of_node || dev->of_node_reused)
+ return -ENODEV;
+
+ sl = of_modalias(dev->of_node, str, len - 2);
if (sl < 0)
return sl;
if (sl > len - 2)
@@ -386,8 +391,8 @@ int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *
if (add_uevent_var(env, "MODALIAS="))
return -ENOMEM;

- sl = of_device_get_modalias(dev, &env->buf[env->buflen-1],
- sizeof(env->buf) - env->buflen);
+ sl = of_modalias(dev->of_node, &env->buf[env->buflen-1],
+ sizeof(env->buf) - env->buflen);
if (sl < 0)
return sl;
if (sl >= (sizeof(env->buf) - env->buflen))
--
2.25.1