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| author | Ivan Safonov <insafonov@gmail.com> | 2017-04-16 23:21:15 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-18 16:48:26 +0200 |
| commit | f5332b000707b0b415291901846c4a8fc24f6a2e (patch) | |
| tree | 5e0f88ab36581200608c884301c24a4f7cb0aabb /drivers/usb | |
| parent | ec1dafe8ec5f846d6b1b280309d8b03d25b096fd (diff) | |
| download | linux-f5332b000707b0b415291901846c4a8fc24f6a2e.tar.bz2 | |
usb: musb: cppi_dma.c: use DIV_ROUND_UP macro in cppi_next_(r|t)x_segment()
DIV_ROUND_UP is bit useful than series of "/" and "%" operations.
Replace "/%" sequence with DIV_ROUND_UP macro.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/cppi_dma.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c index c4fabe952ca6..a13bd3625043 100644 --- a/drivers/usb/musb/cppi_dma.c +++ b/drivers/usb/musb/cppi_dma.c @@ -582,9 +582,10 @@ cppi_next_tx_segment(struct musb *musb, struct cppi_channel *tx) maxpacket = length; n_bds = 1; } else { - n_bds = length / maxpacket; - if (!length || (length % maxpacket)) - n_bds++; + if (length) + n_bds = DIV_ROUND_UP(length, maxpacket); + else + n_bds = 1; n_bds = min(n_bds, (unsigned) NUM_TXCHAN_BD); length = min(n_bds * maxpacket, length); } @@ -790,9 +791,7 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket) n_bds = 0xffff / maxpacket; length = n_bds * maxpacket; } else { - n_bds = length / maxpacket; - if (length % maxpacket) - n_bds++; + n_bds = DIV_ROUND_UP(length, maxpacket); } if (n_bds == 1) onepacket = 1; |