diff options
| author | Julia Lawall <julia@diku.dk> | 2008-09-22 19:22:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-09-22 19:22:58 -0700 |
| commit | 6a19309db0a02d821494f4df754046c85a230627 (patch) | |
| tree | 03936c1806097bb4e0aafc9956e866727f713ea9 /drivers/atm/horizon.c | |
| parent | ca330c5a913a9b1690c709f4cfcd6be0c8696b14 (diff) | |
drivers/atm: Use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
In the case of the file drivers/atm/eni.c, I am a little bit suspicious of
the -1 at the end of the affected expression. Please check that that is
what is wanted.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm/horizon.c')
| -rw-r--r-- | drivers/atm/horizon.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c index c0ac728dc564..615412364e99 100644 --- a/drivers/atm/horizon.c +++ b/drivers/atm/horizon.c @@ -635,7 +635,7 @@ static int make_rate (const hrz_dev * dev, u32 c, rounding r, // take care of rounding switch (r) { case round_down: - pre = (br+(c<<div)-1)/(c<<div); + pre = DIV_ROUND_UP(br, c<<div); // but p must be non-zero if (!pre) pre = 1; @@ -668,7 +668,7 @@ static int make_rate (const hrz_dev * dev, u32 c, rounding r, // take care of rounding switch (r) { case round_down: - pre = (br+(c<<div)-1)/(c<<div); + pre = DIV_ROUND_UP(br, c<<div); break; case round_nearest: pre = (br+(c<<div)/2)/(c<<div); @@ -698,7 +698,7 @@ got_it: if (bits) *bits = (div<<CLOCK_SELECT_SHIFT) | (pre-1); if (actual) { - *actual = (br + (pre<<div) - 1) / (pre<<div); + *actual = DIV_ROUND_UP(br, pre<<div); PRINTD (DBG_QOS, "actual rate: %u", *actual); } return 0; @@ -1967,7 +1967,7 @@ static int __devinit hrz_init (hrz_dev * dev) { // Set the max AAL5 cell count to be just enough to contain the // largest AAL5 frame that the user wants to receive wr_regw (dev, MAX_AAL5_CELL_COUNT_OFF, - (max_rx_size + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD); + DIV_ROUND_UP(max_rx_size + ATM_AAL5_TRAILER, ATM_CELL_PAYLOAD)); // Enable receive wr_regw (dev, RX_CONFIG_OFF, rd_regw (dev, RX_CONFIG_OFF) | RX_ENABLE); |