[PATCH v2] usb: musb: cppi_dma.c: use DIV_ROUND_UP macro in cppi_next_(r|t)x_segment()

2017-03-25 Thread Ivan Safonov 
DIV_ROUND_UP is bit useful than series of "/" and "%" operations.
Replace "/%" sequence with DIV_ROUND_UP macro.

Signed-off-by: Ivan Safonov <insafo...@gmail.com>
---
Changes in v2:
 - little style fix

 drivers/usb/musb/cppi_dma.c | 11 +--
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index c4fabe95..a13bd36 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 = 0x / 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;
-- 
2.10.2

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[PATCH] usb: musb: cppi_dma.c: use DIV_ROUND_UP macro in cppi_next_(r|t)x_segment()

2017-02-15 Thread Ivan Safonov 
DIV_ROUND_UP is bit useful than series of "/" and "%" operations.
Replace "/%" sequence with DIV_ROUND_UP macro.

Signed-off-by: Ivan Safonov <insafo...@gmail.com>
---
 drivers/usb/musb/cppi_dma.c | 10 --
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index 1ae48e6..d376188 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -582,9 +582,9 @@ 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++;
+   n_bds = DIV_ROUND_UP(length, maxpacket);
+   if (length == 0)
+   n_bds = 1;
n_bds = min(n_bds, (unsigned) NUM_TXCHAN_BD);
length = min(n_bds * maxpacket, length);
}
@@ -790,9 +790,7 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel 
*rx, int onepacket)
n_bds = 0x / 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;
-- 
2.10.2

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