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staging: most: core: fix list traversing 

This patch fixes the offset and data handling when traversing
the list of devices that are attached to the bus.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrey Shvetsov 2017-11-21 15:05:22 +01:00 committed by Greg Kroah-Hartman
parent eb9e2bc80d
commit e7e3ce0458
1 changed files with 13 additions and 4 deletions
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17
drivers/staging/most/core.c
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@ -529,10 +529,16 @@ static struct core_component *match_component(char *name)
return NULL;
}
struct show_links_data {
int offs;
char *buf;
};
int print_links(struct device *dev, void *data)
{
int offs = 0;
char *buf = data;
struct show_links_data *d = data;
int offs = d->offs;
char *buf = d->buf;
struct most_channel *c;
struct most_interface *iface = to_most_interface(dev);
@ -554,13 +560,16 @@ int print_links(struct device *dev, void *data)
dev_name(&c->dev));
}
}
d->offs = offs;
return 0;
}
static ssize_t links_show(struct device_driver *drv, char *buf)
{
bus_for_each_dev(&mc.bus, NULL, buf, print_links);
return strlen(buf);
struct show_links_data d = { .buf = buf };
bus_for_each_dev(&mc.bus, NULL, &d, print_links);
return d.offs;
}
static ssize_t components_show(struct device_driver *drv, char *buf)