Merge branch 'irq/wire-msi-bridge' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull the MSI wire bridge implementation from Marc Zyngier along with
the first user of it. This is infrastructure to support a wired
interrupt to MSI interrupt brigde. The first user is mbigen found in
Hisilicon ARM SoCs.

4 files changed, 7 insertions, 6 deletions

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index adc6d52efa46..cf43e9e18368 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -423,7 +423,7 @@ static ssize_t __ffs_ep0_read_events(struct ffs_data *ffs, char __user *buf,
 	spin_unlock_irq(&ffs->ev.waitq.lock);
 	mutex_unlock(&ffs->mutex);
 
-	return unlikely(__copy_to_user(buf, events, size)) ? -EFAULT : size;
+	return unlikely(copy_to_user(buf, events, size)) ? -EFAULT : size;
 }
 
 static ssize_t ffs_ep0_read(struct file *file, char __user *buf,
@@ -513,7 +513,7 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf,
 
 		/* unlocks spinlock */
 		ret = __ffs_ep0_queue_wait(ffs, data, len);
-		if (likely(ret > 0) && unlikely(__copy_to_user(buf, data, len)))
+		if (likely(ret > 0) && unlikely(copy_to_user(buf, data, len)))
 			ret = -EFAULT;
 		goto done_mutex;
 
@@ -3493,7 +3493,7 @@ static char *ffs_prepare_buffer(const char __user *buf, size_t len)
 	if (unlikely(!data))
 		return ERR_PTR(-ENOMEM);
 
-	if (unlikely(__copy_from_user(data, buf, len))) {
+	if (unlikely(copy_from_user(data, buf, len))) {
 		kfree(data);
 		return ERR_PTR(-EFAULT);
 	}
diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c
index 23933bdf2d9d..ddc3aad886b7 100644
--- a/drivers/usb/gadget/function/f_loopback.c
+++ b/drivers/usb/gadget/function/f_loopback.c
@@ -329,7 +329,7 @@ static int alloc_requests(struct usb_composite_dev *cdev,
 	for (i = 0; i < loop->qlen && result == 0; i++) {
 		result = -ENOMEM;
 
-		in_req = usb_ep_alloc_request(loop->in_ep, GFP_KERNEL);
+		in_req = usb_ep_alloc_request(loop->in_ep, GFP_ATOMIC);
 		if (!in_req)
 			goto fail;
 
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 42acb45e1ab4..898a570319f1 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -370,6 +370,7 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 		if (err) {
 			ERROR(midi, "%s queue req: %d\n",
 				    midi->out_ep->name, err);
+			free_ep_req(midi->out_ep, req);
 		}
 	}
 
@@ -545,7 +546,7 @@ static void f_midi_transmit(struct f_midi *midi, struct usb_request *req)
 		}
 	}
 
-	if (req->length > 0) {
+	if (req->length > 0 && ep->enabled) {
 		int err;
 
 		err = usb_ep_queue(ep, req, GFP_ATOMIC);
diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index 289ebca316d3..ad8c9b05572d 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -20,7 +20,7 @@
 #define UVC_ATTR(prefix, cname, aname) \
 static struct configfs_attribute prefix##attr_##cname = { \
 	.ca_name	= __stringify(aname),				\
-	.ca_mode	= S_IRUGO,					\
+	.ca_mode	= S_IRUGO | S_IWUGO,				\
 	.ca_owner	= THIS_MODULE,					\
 	.show		= prefix##cname##_show,				\
 	.store		= prefix##cname##_store,			\