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PCI: endpoint: Simplify name allocation for EPF device

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This commit replaces allocating and freeing the intermediate
'buf'/'func_name' with a combination of 'kstrndup()' and 'len'.

'len' is the required length of 'epf->name'.
'epf->name' should be either the first part of 'name' preceding the '.'
or the complete 'name', if there is no '.' in the name.

Signed-off-by: Rolf Evers-Fischer <rolf.evers.fischer@aptiv.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
This commit is contained in:
Rolf Evers-Fischer 2018-02-28 18:32:18 +01:00 committed by Lorenzo Pieralisi
parent 7928b2cbe5
commit 36cc14ac14
1 changed files with 4 additions and 18 deletions
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22
drivers/pci/endpoint/pci-epf-core.c
View file

@ -200,8 +200,7 @@ struct pci_epf *pci_epf_create(const char *name)
int ret;
struct pci_epf *epf;
struct device *dev;
char *func_name;
char *buf;
int len;
epf = kzalloc(sizeof(*epf), GFP_KERNEL);
if (!epf) {
@ -209,20 +208,11 @@ struct pci_epf *pci_epf_create(const char *name)
goto err_ret;
}
buf = kstrdup(name, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto free_epf;
}
func_name = buf;
buf = strchrnul(buf, '.');
*buf = '\0';
epf->name = kstrdup(func_name, GFP_KERNEL);
len = strchrnul(name, '.') - name;
epf->name = kstrndup(name, len, GFP_KERNEL);
if (!epf->name) {
ret = -ENOMEM;
goto free_func_name;
goto free_epf;
}
dev = &epf->dev;
@ -238,16 +228,12 @@ struct pci_epf *pci_epf_create(const char *name)
if (ret)
goto put_dev;
kfree(func_name);
return epf;
put_dev:
put_device(dev);
kfree(epf->name);
free_func_name:
kfree(func_name);
free_epf:
kfree(epf);