Hi,
On Tue, 13 Jun 2017 10:11:17 +0800 Kever Yang wrote:
Hi Simon,
On 06/09/2017 08:28 PM, Simon Glass wrote:
On 7 June 2017 at 19:20, Kever Yang kever.yang@rock-chips.com wrote:
According to MMC spec, the write_counter is 4-byte length, use 'int' instead of 'long' type for the 'long' is not 4-byte in 64 bit CPU.
Signed-off-by: Jason Zhu jason.zhu@rock-chips.com Signed-off-by: Kever Yang kever.yang@rock-chips.com
drivers/mmc/rpmb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
So should we use uint32_t?
Yes, we can use uint32_t, I use 'unsigned int' just for the same format with other members in the structure which using unsigned char/short.
Is there a doc for which kind of data format prefer to use first in U-Boot? unsigned int, uint32_t, u32;
uint32_t is guaranteed to be of size 32bit according to the C spec. '[unsigned] int' is only guaranteed to be at least 32bit but can be larger on some machine. A good overview of the C data types and their properties can be found at: https://en.wikipedia.org/wiki/C_data_types
Lothar Waßmann