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of: Update of_device_get_modalias()

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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@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230404172148.82422-8-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miquel Raynal 2023-04-04 18:21:15 +01:00 committed by Greg Kroah-Hartman
parent 2187af84e5
commit 5c3d15e127
1 changed files with 17 additions and 12 deletions
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29
drivers/of/device.c
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@ -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))