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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>
This commit is contained in:
Ivan Safonov 2017-04-16 23:21:15 -05:00 committed by Greg Kroah-Hartman
parent ec1dafe8ec
commit f5332b0007
1 changed files with 5 additions and 6 deletions
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11
drivers/usb/musb/cppi_dma.c
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@ -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;