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parport: do not check portlist when using device-model 

We do not need to maintain a list of ports when we are using the
device-model. The base layer is going to maintain the list for us and
we can get the list of ports just using bus_for_each_dev().

Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20191016144540.18810-2-sudipm.mukherjee@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2019-10-16 15:45:38 +01:00 committed by Greg Kroah-Hartman
parent c059d57996
commit e962cd9cf9
1 changed files with 2 additions and 3 deletions
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5
drivers/parport/share.c
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@ -266,9 +266,6 @@ static int port_check(struct device *dev, void *dev_drv)
int __parport_register_driver(struct parport_driver *drv, struct module *owner,
const char *mod_name)
{
if (list_empty(&portlist))
get_lowlevel_driver();
if (drv->devmodel) {
/* using device model */
int ret;
@ -292,6 +289,8 @@ int __parport_register_driver(struct parport_driver *drv, struct module *owner,
drv->devmodel = false;
if (list_empty(&portlist))
get_lowlevel_driver();
mutex_lock(&registration_lock);
list_for_each_entry(port, &portlist, list)
drv->attach(port);