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authorJulia Lawall <julia@diku.dk>2008-09-22 19:22:58 -0700
committerDavid S. Miller <davem@davemloft.net>2008-09-22 19:22:58 -0700
commit6a19309db0a02d821494f4df754046c85a230627 (patch)
tree03936c1806097bb4e0aafc9956e866727f713ea9 /drivers/atm/zatm.c
parentca330c5a913a9b1690c709f4cfcd6be0c8696b14 (diff)
downloadop-kernel-dev-6a19309db0a02d821494f4df754046c85a230627.zip
op-kernel-dev-6a19309db0a02d821494f4df754046c85a230627.tar.gz
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/zatm.c')
-rw-r--r--drivers/atm/zatm.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 58583c6..752b1ba 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -496,8 +496,8 @@ static int open_rx_first(struct atm_vcc *vcc)
vcc->qos.rxtp.max_sdu = 65464;
/* fix this - we may want to receive 64kB SDUs
later */
- cells = (vcc->qos.rxtp.max_sdu+ATM_AAL5_TRAILER+
- ATM_CELL_PAYLOAD-1)/ATM_CELL_PAYLOAD;
+ cells = DIV_ROUND_UP(vcc->qos.rxtp.max_sdu + ATM_AAL5_TRAILER,
+ ATM_CELL_PAYLOAD);
zatm_vcc->pool = pool_index(cells*ATM_CELL_PAYLOAD);
}
else {
@@ -820,7 +820,7 @@ static int alloc_shaper(struct atm_dev *dev,int *pcr,int min,int max,int ubr)
}
else {
i = 255;
- m = (ATM_OC3_PCR*255+max-1)/max;
+ m = DIV_ROUND_UP(ATM_OC3_PCR*255, max);
}
}
if (i > m) {
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