From: Arjan van de Ven Date: Fri, 13 Jan 2006 14:52:55 +0000 (+0100) Subject: [PATCH] USBATM: semaphore to mutex conversion X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ab3c81ff639fbee4ab32af84c809d283b773084a;p=openwrt%2Fstaging%2Fblogic.git [PATCH] USBATM: semaphore to mutex conversion This is the usbatm part of the Arjan, Jes and Ingo mass semaphore to mutex conversion, reworked to apply on top of the patches I just sent to you. This time, with correct attribution and signed-off lines. Signed-off-by: Arjan van de Ven Signed-off-by: Ingo Molnar Signed-off-by: Duncan Sands Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 70a96e98152c..04631dcbabbc 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -36,6 +36,7 @@ #include #include /* FIXME: linux/firmware.h should include it itself */ #include +#include #include "usbatm.h" @@ -160,7 +161,7 @@ struct cxacru_data { struct work_struct poll_work; /* contol handles */ - struct semaphore cm_serialize; + struct mutex cm_serialize; u8 *rcv_buf; u8 *snd_buf; struct urb *rcv_urb; @@ -219,7 +220,7 @@ static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, goto fail; } - down(&instance->cm_serialize); + mutex_lock(&instance->cm_serialize); /* submit reading urb before the writing one */ init_completion(&instance->rcv_done); @@ -288,7 +289,7 @@ static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, ret = offd; dbg("cm %#x", cm); fail: - up(&instance->cm_serialize); + mutex_unlock(&instance->cm_serialize); return ret; } @@ -717,7 +718,7 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance, instance->snd_buf, PAGE_SIZE, cxacru_blocking_completion, &instance->snd_done, 4); - init_MUTEX(&instance->cm_serialize); + mutex_init(&instance->cm_serialize); INIT_WORK(&instance->poll_work, (void *)cxacru_poll_status, instance); diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 956cd9e82dee..4362cfd801b5 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -63,6 +63,7 @@ #include #include #include +#include #include #include "usbatm.h" @@ -358,7 +359,7 @@ struct intr_pkt { #define INTR_PKT_SIZE 28 static struct usb_driver uea_driver; -static DECLARE_MUTEX(uea_semaphore); +static DEFINE_MUTEX(uea_mutex); static const char *chip_name[] = {"ADI930", "Eagle I", "Eagle II", "Eagle III"}; static int modem_index; @@ -1418,13 +1419,13 @@ static ssize_t read_status(struct device *dev, struct device_attribute *attr, int ret = -ENODEV; struct uea_softc *sc; - down(&uea_semaphore); + mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; ret = snprintf(buf, 10, "%08x\n", sc->stats.phy.state); out: - up(&uea_semaphore); + mutex_unlock(&uea_mutex); return ret; } @@ -1434,14 +1435,14 @@ static ssize_t reboot(struct device *dev, struct device_attribute *attr, int ret = -ENODEV; struct uea_softc *sc; - down(&uea_semaphore); + mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; sc->reset = 1; ret = count; out: - up(&uea_semaphore); + mutex_unlock(&uea_mutex); return ret; } @@ -1453,7 +1454,7 @@ static ssize_t read_human_status(struct device *dev, struct device_attribute *at int ret = -ENODEV; struct uea_softc *sc; - down(&uea_semaphore); + mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; @@ -1473,7 +1474,7 @@ static ssize_t read_human_status(struct device *dev, struct device_attribute *at break; } out: - up(&uea_semaphore); + mutex_unlock(&uea_mutex); return ret; } @@ -1485,7 +1486,7 @@ static ssize_t read_delin(struct device *dev, struct device_attribute *attr, int ret = -ENODEV; struct uea_softc *sc; - down(&uea_semaphore); + mutex_lock(&uea_mutex); sc = dev_to_uea(dev); if (!sc) goto out; @@ -1497,7 +1498,7 @@ static ssize_t read_delin(struct device *dev, struct device_attribute *attr, else ret = sprintf(buf, "GOOD\n"); out: - up(&uea_semaphore); + mutex_unlock(&uea_mutex); return ret; } @@ -1511,7 +1512,7 @@ static ssize_t read_##name(struct device *dev, \ int ret = -ENODEV; \ struct uea_softc *sc; \ \ - down(&uea_semaphore); \ + mutex_lock(&uea_mutex); \ sc = dev_to_uea(dev); \ if (!sc) \ goto out; \ @@ -1519,7 +1520,7 @@ static ssize_t read_##name(struct device *dev, \ if (reset) \ sc->stats.phy.name = 0; \ out: \ - up(&uea_semaphore); \ + mutex_unlock(&uea_mutex); \ return ret; \ } \ \ @@ -1737,9 +1738,9 @@ static void uea_disconnect(struct usb_interface *intf) * Pre-firmware device has one interface */ if (usb->config->desc.bNumInterfaces != 1 && ifnum == 0) { - down(&uea_semaphore); + mutex_lock(&uea_mutex); usbatm_usb_disconnect(intf); - up(&uea_semaphore); + mutex_unlock(&uea_mutex); uea_info(usb, "ADSL device removed\n"); } diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index 5d339af16248..c1211fc037d9 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -823,7 +823,7 @@ static int usbatm_atm_open(struct atm_vcc *vcc) return -EINVAL; } - down(&instance->serialize); /* vs self, usbatm_atm_close, usbatm_usb_disconnect */ + mutex_lock(&instance->serialize); /* vs self, usbatm_atm_close, usbatm_usb_disconnect */ if (instance->disconnected) { atm_dbg(instance, "%s: disconnected!\n", __func__); @@ -867,7 +867,7 @@ static int usbatm_atm_open(struct atm_vcc *vcc) set_bit(ATM_VF_PARTIAL, &vcc->flags); set_bit(ATM_VF_READY, &vcc->flags); - up(&instance->serialize); + mutex_unlock(&instance->serialize); atm_dbg(instance, "%s: allocated vcc data 0x%p\n", __func__, new); @@ -875,7 +875,7 @@ static int usbatm_atm_open(struct atm_vcc *vcc) fail: kfree(new); - up(&instance->serialize); + mutex_unlock(&instance->serialize); return ret; } @@ -896,7 +896,7 @@ static void usbatm_atm_close(struct atm_vcc *vcc) usbatm_cancel_send(instance, vcc); - down(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ + mutex_lock(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ tasklet_disable(&instance->rx_channel.tasklet); if (instance->cached_vcc == vcc_data) { @@ -919,7 +919,7 @@ static void usbatm_atm_close(struct atm_vcc *vcc) clear_bit(ATM_VF_PARTIAL, &vcc->flags); clear_bit(ATM_VF_ADDR, &vcc->flags); - up(&instance->serialize); + mutex_unlock(&instance->serialize); atm_dbg(instance, "%s successful\n", __func__); } @@ -1009,9 +1009,9 @@ static int usbatm_do_heavy_init(void *arg) if (!ret) ret = usbatm_atm_init(instance); - down(&instance->serialize); + mutex_lock(&instance->serialize); instance->thread_pid = -1; - up(&instance->serialize); + mutex_unlock(&instance->serialize); complete_and_exit(&instance->thread_exited, ret); } @@ -1025,9 +1025,9 @@ static int usbatm_heavy_init(struct usbatm_data *instance) return ret; } - down(&instance->serialize); + mutex_lock(&instance->serialize); instance->thread_pid = ret; - up(&instance->serialize); + mutex_unlock(&instance->serialize); wait_for_completion(&instance->thread_started); @@ -1110,7 +1110,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, /* private fields */ kref_init(&instance->refcount); /* dropped in usbatm_usb_disconnect */ - init_MUTEX(&instance->serialize); + mutex_init(&instance->serialize); instance->thread_pid = -1; init_completion(&instance->thread_started); @@ -1273,18 +1273,18 @@ void usbatm_usb_disconnect(struct usb_interface *intf) usb_set_intfdata(intf, NULL); - down(&instance->serialize); + mutex_lock(&instance->serialize); instance->disconnected = 1; if (instance->thread_pid >= 0) kill_proc(instance->thread_pid, SIGTERM, 1); - up(&instance->serialize); + mutex_unlock(&instance->serialize); wait_for_completion(&instance->thread_exited); - down(&instance->serialize); + mutex_lock(&instance->serialize); list_for_each_entry(vcc_data, &instance->vcc_list, list) vcc_release_async(vcc_data->vcc, -EPIPE); - up(&instance->serialize); + mutex_unlock(&instance->serialize); tasklet_disable(&instance->rx_channel.tasklet); tasklet_disable(&instance->tx_channel.tasklet); diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h index 1cf4767007de..ff8551e93372 100644 --- a/drivers/usb/atm/usbatm.h +++ b/drivers/usb/atm/usbatm.h @@ -34,6 +34,7 @@ #include #include #include +#include /* #define VERBOSE_DEBUG @@ -171,7 +172,7 @@ struct usbatm_data { ********************************/ struct kref refcount; - struct semaphore serialize; + struct mutex serialize; int disconnected; /* heavy init */