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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>
This commit is contained in:
Tapasweni Pathak 2014-10-08 22:56:57 +05:30 committed by Greg Kroah-Hartman
parent ffceca8c17
commit dea7503ac4
1 changed files with 4 additions and 5 deletions
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9
drivers/staging/octeon-usb/octeon-hcd.c
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@ -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) &&