Commit 39db74ce authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

mei: bus: use ssize_t as the return type for send and receive 



Mei bus receive and send function may return either number
of transmitted bytes or errno.  It is better to use ssize_t
type for that purpose that mixing size_t with int.

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 787d6182

drivers/misc/mei/bus.c

+14 −16
Original line number Diff line number Diff line
@@ -224,13 +224,13 @@ void mei_cl_driver_unregister(struct mei_cl_driver *driver) 
}

EXPORT_SYMBOL_GPL(mei_cl_driver_unregister);



static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,

static ssize_t ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,

			bool blocking)

{

	struct mei_device *dev;

	struct mei_me_client *me_cl;

	struct mei_cl_cb *cb;

	int rets;

	ssize_t rets;



	if (WARN_ON(!cl || !cl->dev))

		return -ENODEV;
@@ -271,12 +271,12 @@ static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, 
	return rets;

}



int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)

ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)

{

	struct mei_device *dev;

	struct mei_cl_cb *cb;

	size_t r_length;

	int err;

	ssize_t rets;



	if (WARN_ON(!cl || !cl->dev))

		return -ENODEV;
@@ -286,11 +286,9 @@ int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) 
	mutex_lock(&dev->device_lock);



	if (!cl->read_cb) {

		err = mei_cl_read_start(cl, length);

		if (err < 0) {

			mutex_unlock(&dev->device_lock);

			return err;

		}

		rets = mei_cl_read_start(cl, length);

		if (rets < 0)

			goto out;

	}



	if (cl->reading_state != MEI_READ_COMPLETE &&
@@ -313,13 +311,13 @@ int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) 
	cb = cl->read_cb;



	if (cl->reading_state != MEI_READ_COMPLETE) {

		r_length = 0;

		rets = 0;

		goto out;

	}



	r_length = min_t(size_t, length, cb->buf_idx);



	memcpy(buf, cb->response_buffer.data, r_length);

	rets = r_length;



	mei_io_cb_free(cb);

	cl->reading_state = MEI_IDLE;
@@ -328,20 +326,20 @@ int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) 
out:

	mutex_unlock(&dev->device_lock);



	return r_length;

	return rets;

}



inline int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length)

inline ssize_t __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length)

{

	return ___mei_cl_send(cl, buf, length, 0);

}



inline int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length)

inline ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length)

{

	return ___mei_cl_send(cl, buf, length, 1);

}



int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length)

ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length)

{

	struct mei_cl *cl = device->cl;
@@ -355,7 +353,7 @@ int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length) 
}

EXPORT_SYMBOL_GPL(mei_cl_send);



int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length)

ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length)

{

	struct mei_cl *cl =  device->cl;

drivers/misc/mei/mei_dev.h

+3 −3
Original line number Diff line number Diff line
@@ -345,9 +345,9 @@ struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, 
					struct mei_cl_ops *ops);

void mei_cl_remove_device(struct mei_cl_device *device);



int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length);

int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length);

int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length);

ssize_t __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length);

ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length);

ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length);

void mei_cl_bus_rx_event(struct mei_cl *cl);

void mei_cl_bus_remove_devices(struct mei_device *dev);

int mei_cl_bus_init(void);

include/linux/mei_cl_bus.h

+2 −2
Original line number Diff line number Diff line
@@ -25,8 +25,8 @@ int __mei_cl_driver_register(struct mei_cl_driver *driver, 


void mei_cl_driver_unregister(struct mei_cl_driver *driver);



int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length);

int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length);

ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length);

ssize_t  mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length);



typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,

			       u32 events, void *context);

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