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| author | Julia Lawall <julia@diku.dk> | 2008-03-05 00:25:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-04-25 06:16:39 +0200 |
| commit | dfa5ec79d28300b0d1fdeafbeebf0a6b721edc38 (patch) | |
| tree | bd379b8bd572186c9274e31e5c3ab3b829512106 /drivers/usb/host/r8a66597-hcd.c | |
| parent | USB: io_ti: lock mcr and msr shadows properly (diff) | |
| download | linux-dfa5ec79d28300b0d1fdeafbeebf0a6b721edc38.tar.xz linux-dfa5ec79d28300b0d1fdeafbeebf0a6b721edc38.zip | |
USB: use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
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: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/r8a66597-hcd.c')
| -rw-r--r-- | drivers/usb/host/r8a66597-hcd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 9f80e5285575..afd4fbe7713c 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -960,9 +960,9 @@ static void prepare_packet_read(struct r8a66597 *r8a66597, r8a66597_write(r8a66597, TRCLR, td->pipe->pipetre); r8a66597_write(r8a66597, - (urb->transfer_buffer_length - + td->maxpacket - 1) - / td->maxpacket, + DIV_ROUND_UP + (urb->transfer_buffer_length, + td->maxpacket), td->pipe->pipetrn); r8a66597_bset(r8a66597, TRENB, td->pipe->pipetre); |