diff options
Diffstat (limited to 'drivers/usb/wusbcore/wusbhc.c')
| -rw-r--r-- | drivers/usb/wusbcore/wusbhc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c index 8759aa66da28..e712af3e46c2 100644 --- a/drivers/usb/wusbcore/wusbhc.c +++ b/drivers/usb/wusbcore/wusbhc.c @@ -205,12 +205,42 @@ static ssize_t wusb_dnts_store(struct device *dev, } static DEVICE_ATTR(wusb_dnts, 0644, wusb_dnts_show, wusb_dnts_store); +static ssize_t wusb_retry_count_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + + return sprintf(buf, "%d\n", wusbhc->retry_count); +} + +static ssize_t wusb_retry_count_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + uint8_t retry_count; + ssize_t result; + + result = sscanf(buf, "%hhu", &retry_count); + + if (result != 1) + return -EINVAL; + + wusbhc->retry_count = max_t(uint8_t, retry_count, WUSB_RETRY_COUNT_MAX); + + return size; +} +static DEVICE_ATTR(wusb_retry_count, 0644, wusb_retry_count_show, + wusb_retry_count_store); + /* Group all the WUSBHC attributes */ static struct attribute *wusbhc_attrs[] = { &dev_attr_wusb_trust_timeout.attr, &dev_attr_wusb_chid.attr, &dev_attr_wusb_phy_rate.attr, &dev_attr_wusb_dnts.attr, + &dev_attr_wusb_retry_count.attr, NULL, }; @@ -241,6 +271,7 @@ int wusbhc_create(struct wusbhc *wusbhc) wusbhc->phy_rate = UWB_PHY_RATE_INVALID - 1; wusbhc->dnts_num_slots = 4; wusbhc->dnts_interval = 2; + wusbhc->retry_count = WUSB_RETRY_COUNT_INFINITE; mutex_init(&wusbhc->mutex); result = wusbhc_mmcie_create(wusbhc); |