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authorTapasweni Pathak <tapaswenipathak@gmail.com>2014-10-08 17:26:57 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-10-20 02:29:20 (GMT)
commitdea7503ac4c53edfd0d25d6a1c8b360b3db700d7 (patch)
tree666f87e918a6d55f80c3c04aa1a34bf8e7977ab1 /drivers/staging/octeon-usb
parentffceca8c1739938b58cdc5ce375d33a13150f7af (diff)
staging: octeon-usb: use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. Coccinelle script used : // <smpl> @haskernel@ @@ @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: Tapasweni Pathak <tapaswenipathak@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/octeon-usb')
-rw-r--r--drivers/staging/octeon-usb/octeon-hcd.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
index 6ddde6a..7ac64ef 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -743,7 +743,7 @@ static int cvmx_usb_initialize(struct cvmx_usb_state *usb,
* such that USB is as close as possible to 125Mhz
*/
{
- int divisor = (octeon_get_clock_rate()+125000000-1)/125000000;
+ int divisor = DIV_ROUND_UP(octeon_get_clock_rate(), 125000000);
/* Lower than 4 doesn't seem to work properly */
if (divisor < 4)
divisor = 4;
@@ -1606,8 +1606,8 @@ static void __cvmx_usb_start_channel_control(struct cvmx_usb_state *usb,
* Calculate the number of packets to transfer. If the length is zero
* we still need to transfer one packet
*/
- packets_to_transfer = (bytes_to_transfer + pipe->max_packet - 1) /
- pipe->max_packet;
+ packets_to_transfer = DIV_ROUND_UP(bytes_to_transfer,
+ pipe->max_packet);
if (packets_to_transfer == 0)
packets_to_transfer = 1;
else if ((packets_to_transfer > 1) &&
@@ -1852,8 +1852,7 @@ static void __cvmx_usb_start_channel(struct cvmx_usb_state *usb,
* zero we still need to transfer one packet
*/
packets_to_transfer =
- (bytes_to_transfer + pipe->max_packet - 1) /
- pipe->max_packet;
+ DIV_ROUND_UP(bytes_to_transfer, pipe->max_packet);
if (packets_to_transfer == 0)
packets_to_transfer = 1;
else if ((packets_to_transfer > 1) &&

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