[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 <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 4 deletions

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 <linux/init.h>
 #include <linux/device.h>       /* FIXME: linux/firmware.h should include it itself */
 #include <linux/firmware.h>
+#include <linux/mutex.h>
 
 #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);