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net: dsa: Simplify 'dsa_tag_protocol_to_str()'

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There is no point in preparing the module name in a buffer. The format
string can be passed diectly to 'request_module()'.

This axes a few lines of code and cleans a few things:
   - max len for a driver name is MODULE_NAME_LEN wich is ~ 60 chars,
     not 128. It would be down-sized in 'request_module()'
   - we should pass the total size of the buffer to 'snprintf()', not the
     size minus 1

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christophe JAILLET 2020-03-28 10:53:09 +01:00 committed by David S. Miller
parent 32109c7065
commit ee91a83e08
1 changed files with 1 additions and 5 deletions
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6
net/dsa/dsa.c
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@ -88,13 +88,9 @@ const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol)
{ {
struct dsa_tag_driver *dsa_tag_driver; struct dsa_tag_driver *dsa_tag_driver;
const struct dsa_device_ops *ops; const struct dsa_device_ops *ops;
char module_name[128];
bool found = false; bool found = false;
snprintf(module_name, 127, "%s%d", DSA_TAG_DRIVER_ALIAS, request_module("%s%d", DSA_TAG_DRIVER_ALIAS, tag_protocol);
tag_protocol);
request_module(module_name);
mutex_lock(&dsa_tag_drivers_lock); mutex_lock(&dsa_tag_drivers_lock);
list_for_each_entry(dsa_tag_driver, &dsa_tag_drivers_list, list) { list_for_each_entry(dsa_tag_driver, &dsa_tag_drivers_list, list) {