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staging: comedi: drivers: Use DIV_ROUND_CLOSEST

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The kernel.h macro DIV_ROUND_CLOSEST performs the computation
`(x +d/2)/d` but is perhaps more readable.

The Coccinelle script used is as follows:
// <smpl>
@@
expression x,__divisor;
@@
- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Amitoj Kaur Chawla 2016-02-19 20:57:15 +05:30 committed by Greg Kroah-Hartman
parent b7c57dd54a
commit 2ead7b32aa
6 changed files with 7 additions and 7 deletions
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2
drivers/staging/comedi/drivers/addi_apci_3xxx.c
View File

@ -496,7 +496,7 @@ static int apci3xxx_ai_ns_to_timer(struct comedi_device *dev,
switch (flags & CMDF_ROUND_MASK) {
case CMDF_ROUND_NEAREST:
default:
timer = (*ns + base / 2) / base;
timer = DIV_ROUND_CLOSEST(*ns, base);
break;
case CMDF_ROUND_DOWN:
timer = *ns / base;

2
drivers/staging/comedi/drivers/amplc_pci230.c
View File

@ -637,7 +637,7 @@ static unsigned int pci230_divide_ns(uint64_t ns, unsigned int timebase,
switch (flags & CMDF_ROUND_MASK) {
default:
case CMDF_ROUND_NEAREST:
div += (rem + (timebase / 2)) / timebase;
div += DIV_ROUND_CLOSEST(rem, timebase);
break;
case CMDF_ROUND_DOWN:
break;

4
drivers/staging/comedi/drivers/cb_pcidas64.c
View File

@ -1376,7 +1376,7 @@ static int set_ai_fifo_segment_length(struct comedi_device *dev,
num_entries = fifo->max_segment_length;
/* 1 == 256 entries, 2 == 512 entries, etc */
num_increments = (num_entries + increment_size / 2) / increment_size;
num_increments = DIV_ROUND_CLOSEST(num_entries, increment_size);
bits = (~(num_increments - 1)) & fifo->fifo_size_reg_mask;
devpriv->fifo_size_bits &= ~fifo->fifo_size_reg_mask;
@ -2004,7 +2004,7 @@ static unsigned int get_divisor(unsigned int ns, unsigned int flags)
break;
case CMDF_ROUND_NEAREST:
default:
divisor = (ns + TIMER_BASE / 2) / TIMER_BASE;
divisor = DIV_ROUND_CLOSEST(ns, TIMER_BASE);
break;
}
return divisor;

2
drivers/staging/comedi/drivers/dt282x.c
View File

@ -371,7 +371,7 @@ static unsigned int dt282x_ns_to_timer(unsigned int *ns, unsigned int flags)
switch (flags & CMDF_ROUND_MASK) {
case CMDF_ROUND_NEAREST:
default:
divider = (*ns + base / 2) / base;
divider = DIV_ROUND_CLOSEST(*ns, base);
break;
case CMDF_ROUND_DOWN:
divider = (*ns) / base;

2
drivers/staging/comedi/drivers/dt3000.c
View File

@ -361,7 +361,7 @@ static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *nanosec,
switch (flags & CMDF_ROUND_MASK) {
case CMDF_ROUND_NEAREST:
default:
divider = (*nanosec + base / 2) / base;
divider = DIV_ROUND_CLOSEST(*nanosec, base);
break;
case CMDF_ROUND_DOWN:
divider = (*nanosec) / base;

2
drivers/staging/comedi/drivers/ni_pcidio.c
View File

@ -525,7 +525,7 @@ static int ni_pcidio_ns_to_timer(int *nanosec, unsigned int flags)
switch (flags & CMDF_ROUND_MASK) {
case CMDF_ROUND_NEAREST:
default:
divider = (*nanosec + base / 2) / base;
divider = DIV_ROUND_CLOSEST(*nanosec, base);
break;
case CMDF_ROUND_DOWN:
divider = (*nanosec) / base;