Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

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

Browse source 
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: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2014-11-27 14:07:28 +02:00 committed by Greg Kroah-Hartman
parent 787d618225
commit 39db74ce1a
3 changed files with 19 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
drivers/misc/mei/bus.c
View file

@ -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;

6
drivers/misc/mei/mei_dev.h
View file

@ -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);

4
include/linux/mei_cl_bus.h
View file

@ -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);