diff options
| author | Julia Lawall <julia@diku.dk> | 2010-09-05 21:00:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-09-05 16:59:55 -0700 |
| commit | d6269644e1f8fc7931c4d6b86d58de7af63a5fc9 (patch) | |
| tree | 8c5d9c9ddb581c1ed08bdc4842fca7dd71208ec1 /drivers/staging/comedi | |
| parent | 7b1f6bfb03cca84af40aa9142ddf99ace9894f6e (diff) | |
Staging: comedi: Fix unsigned return type
In each case, the function has an unsigned return type, but returns a
negative constant to indicate an error condition. For move_block_from_dma,
there is only one call and the return value is dropped, so it need not be
unsigned. For labpc_eeprom_write, there is only one call and the result is
stored in a signed variable, so again the unsigned return type is not
necessary.
A sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@exists@
identifier f;
constant C;
@@
unsigned f(...)
{ <+...
* return -C;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/adl_pci9118.c | 2 | ||||
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_labpc.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/staging/comedi/drivers/adl_pci9118.c b/drivers/staging/comedi/drivers/adl_pci9118.c index a2bd4e6aff19..cb2843d34bea 100644 --- a/drivers/staging/comedi/drivers/adl_pci9118.c +++ b/drivers/staging/comedi/drivers/adl_pci9118.c @@ -634,7 +634,7 @@ static unsigned int defragment_dma_buffer(struct comedi_device *dev, /* ============================================================================== */ -static unsigned int move_block_from_dma(struct comedi_device *dev, +static int move_block_from_dma(struct comedi_device *dev, struct comedi_subdevice *s, short *dma_buffer, unsigned int num_samples) diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c index 3acf7e62bec4..19f79e8c497a 100644 --- a/drivers/staging/comedi/drivers/ni_labpc.c +++ b/drivers/staging/comedi/drivers/ni_labpc.c @@ -250,7 +250,7 @@ static unsigned int labpc_serial_in(struct comedi_device *dev); static unsigned int labpc_eeprom_read(struct comedi_device *dev, unsigned int address); static unsigned int labpc_eeprom_read_status(struct comedi_device *dev); -static unsigned int labpc_eeprom_write(struct comedi_device *dev, +static int labpc_eeprom_write(struct comedi_device *dev, unsigned int address, unsigned int value); static void write_caldac(struct comedi_device *dev, unsigned int channel, @@ -1986,8 +1986,8 @@ static unsigned int labpc_eeprom_read(struct comedi_device *dev, return value; } -static unsigned int labpc_eeprom_write(struct comedi_device *dev, - unsigned int address, unsigned int value) +static int labpc_eeprom_write(struct comedi_device *dev, + unsigned int address, unsigned int value) { const int write_enable_instruction = 0x6; const int write_instruction = 0x2; |