Merge "USB: f_ncm: Increase the IN endpoint buffer allocation" (c75c8032) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/usb/gadget/composite.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2103,7 +2103,8 @@ int composite_dev_prepare(struct usb_composite_driver *composite,
		if (!cdev->req)
		return -ENOMEM;

		cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL);
		cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ +
		(gadget->extra_buf_alloc), GFP_KERNEL);
		if (!cdev->req->buf)
		goto fail;

drivers/usb/gadget/function/f_accessory.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -579,7 +579,8 @@ static int create_bulk_endpoints(struct acc_dev *dev,

		/* now allocate requests for our endpoints */
		for (i = 0; i < TX_REQ_MAX; i++) {
		req = acc_request_new(dev->ep_in, BULK_BUFFER_SIZE);
		req = acc_request_new(dev->ep_in,
		BULK_BUFFER_SIZE + cdev->gadget->extra_buf_alloc);
		if (!req)
		goto fail;
		req->complete = acc_complete_in;

drivers/usb/gadget/function/f_acm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -788,7 +788,7 @@ acm_bind(struct usb_configuration c, struct usb_function f)
		/* allocate notification */
		acm->notify_req = gs_alloc_req(ep,
		sizeof(struct usb_cdc_notification) + 2,
		GFP_KERNEL);
		cdev->gadget->extra_buf_alloc, GFP_KERNEL);
		if (!acm->notify_req)
		goto fail;

drivers/usb/gadget/function/f_fs.c

+24 −6

Original line number	Diff line number	Diff line
		@@ -189,7 +189,8 @@ static void ffs_closed(struct ffs_data *ffs);

		static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock)
		__attribute__((warn_unused_result, nonnull));
		static char ffs_prepare_buffer(const char __user buf, size_t len)
		static char ffs_prepare_buffer(const char __user buf, size_t len,
		size_t extra_buf_alloc)
		__attribute__((warn_unused_result, nonnull));


		@@ -255,6 +256,7 @@ static ssize_t ffs_ep0_write(struct file file, const char __user buf,
		size_t len, loff_t *ptr)
		{
		struct ffs_data *ffs = file->private_data;
		struct usb_gadget *gadget = ffs->gadget;
		ssize_t ret;
		char *data;

		@@ -279,7 +281,7 @@ static ssize_t ffs_ep0_write(struct file file, const char __user buf,
		break;
		}

		data = ffs_prepare_buffer(buf, len);
		data = ffs_prepare_buffer(buf, len, 0);
		if (IS_ERR(data)) {
		ret = PTR_ERR(data);
		break;
		@@ -352,7 +354,7 @@ static ssize_t ffs_ep0_write(struct file file, const char __user buf,

		spin_unlock_irq(&ffs->ev.waitq.lock);

		data = ffs_prepare_buffer(buf, len);
		data = ffs_prepare_buffer(buf, len, gadget->extra_buf_alloc);
		if (IS_ERR(data)) {
		ret = PTR_ERR(data);
		break;
		@@ -711,9 +713,11 @@ static ssize_t ffs_epfile_io(struct file file, struct ffs_io_data io_data)
		{
		struct ffs_epfile *epfile = file->private_data;
		struct ffs_ep *ep;
		struct ffs_data *ffs = epfile->ffs;
		char *data = NULL;
		ssize_t ret, data_len = -EINVAL;
		int halt;
		size_t extra_buf_alloc = 0;

		pr_debug("%s: len %zu, read %d\n", __func__, io_data->len,
		io_data->read);
		@@ -787,6 +791,11 @@ static ssize_t ffs_epfile_io(struct file file, struct ffs_io_data io_data)
		io_data->len;
		spin_unlock_irq(&epfile->ffs->eps_lock);

		extra_buf_alloc = ffs->gadget->extra_buf_alloc;
		if (io_data->read)
		data = kmalloc(data_len + extra_buf_alloc,
		GFP_KERNEL);
		else
		data = kmalloc(data_len, GFP_KERNEL);
		if (unlikely(!data))
		return -ENOMEM;
		@@ -3557,14 +3566,23 @@ static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock)
		: mutex_lock_interruptible(mutex);
		}

		static char ffs_prepare_buffer(const char __user buf, size_t len)
		/**
		* ffs_prepare_buffer() - copy userspace buffer into kernel.
		* @buf: userspace buffer
		* @len: length of the buffer
		* @extra_alloc_buf: Extra buffer allocation if required by UDC.
		*
		* This function returns pointer to the copied buffer
		*/
		static char ffs_prepare_buffer(const char __user buf, size_t len,
		size_t extra_buf_alloc)
		{
		char *data;

		if (unlikely(!len))
		return NULL;

		data = kmalloc(len, GFP_KERNEL);
		data = kmalloc(len + extra_buf_alloc, GFP_KERNEL);
		if (unlikely(!data))
		return ERR_PTR(-ENOMEM);

drivers/usb/gadget/function/f_mtp.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -515,6 +515,7 @@ static int mtp_create_bulk_endpoints(struct mtp_dev *dev,
		struct usb_composite_dev *cdev = dev->cdev;
		struct usb_request *req;
		struct usb_ep *ep;
		size_t extra_buf_alloc = cdev->gadget->extra_buf_alloc;
		int i;

		DBG(cdev, "create_bulk_endpoints dev: %p\n", dev);
		@@ -552,7 +553,8 @@ retry_tx_alloc:

		/* now allocate requests for our endpoints */
		for (i = 0; i < mtp_tx_reqs; i++) {
		req = mtp_request_new(dev->ep_in, mtp_tx_req_len);
		req = mtp_request_new(dev->ep_in,
		mtp_tx_req_len + extra_buf_alloc);
		if (!req) {
		if (mtp_tx_req_len <= MTP_BULK_BUFFER_SIZE)
		goto fail;
		@@ -590,7 +592,8 @@ retry_rx_alloc:
		dev->rx_req[i] = req;
		}
		for (i = 0; i < INTR_REQ_MAX; i++) {
		req = mtp_request_new(dev->ep_intr, INTR_BUFFER_SIZE);
		req = mtp_request_new(dev->ep_intr,
		INTR_BUFFER_SIZE + extra_buf_alloc);
		if (!req)
		goto fail;
		req->complete = mtp_complete_intr;