On 01/03/2017 8:52 AM, Julia Lawall wrote:
On Tue, 28 Feb 2017, Bart Van Assche wrote:
On 02/28/2017 02:23 PM, Joe Perches wrote:
On Tue, 2017-02-28 at 15:35 +0000, Bart Van Assche wrote:
On Tue, 2017-02-28 at 15:02 +0300, Dan Carpenter wrote:
Bitwise & was obviously intended here.
[]
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
[]
@@ -109,7 +109,7 @@ static inline void (u8 *addr, u64 mac)
int i;
for (i = ETH_ALEN; i > 0; i--) {
- addr[i - 1] = mac && 0xFF;
+ addr[i - 1] = mac & 0xFF;
mac >>= 8;
}
}
Is this the only place where such a loop occurs?
Seems to be.
Should a put_unaligned_be48()
function be introduced?
Why? This is used exactly once.
Really? Here is an example of another open-coded version of
put_unaligned_be48() from arch/mips/cavium-octeon/octeon-platform.c:
new_mac[0] = (mac >> 40) & 0xff;
new_mac[1] = (mac >> 32) & 0xff;
new_mac[2] = (mac >> 24) & 0xff;
new_mac[3] = (mac >> 16) & 0xff;
new_mac[4] = (mac >> 8) & 0xff;
new_mac[5] = mac & 0xff;
drivers/media/radio/radio-shark2.c:
for (i = 0; i < 6; i++)
shark->transfer_buffer[i + 1] = (reg >> (40 - i * 8)) & 0xff;
drivers/rtc/rtc-ab3100.c
buf[0] = (hw_counter) & 0xFF;
buf[1] = (hw_counter >> 8) & 0xFF;
buf[2] = (hw_counter >> 16) & 0xFF;
buf[3] = (hw_counter >> 24) & 0xFF;
buf[4] = (hw_counter >> 32) & 0xFF;
buf[5] = (hw_counter >> 40) & 0xFF;
drivers/net/ethernet/sun/ldmvsw.c
for (i = 0; i < ETH_ALEN; i++)
port->raddr[i] = (*rmac >> (5 - i) * 8) & 0xff;
drivers/net/ethernet/sun/sunvnet.c
for (i = 0; i < ETH_ALEN; i++)
dev->dev_addr[i] = (*local_mac >> (5 - i) * 8) & 0xff;
for (i = 0; i < ETH_ALEN; i++)
port->raddr[i] = (*rmac >> (5 - i) * 8) & 0xff;
julia
With these code replication examples, I agree that a function should be
introduced.
Bart.
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