On Wed, 2014-01-15 at 08:58 -0600, Chin Liang See wrote:
Enhance the DesignWare I2C driver to support address length more than 1 byte. This enhancement is required as some I2C slave device such as EEPROM chip might have 16 bit address byte. diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c index cb2ac04..c0ac5f7 100644 --- a/drivers/i2c/designware_i2c.c +++ b/drivers/i2c/designware_i2c.c @@ -205,27 +205,21 @@ static int check_params(uint addr, int alen, uchar *buffer, int len) return 1; }
- if (alen > 1) {
printf("addr len %d not supported\n", alen);return 1;- }
- if (addr + len > 256) {
printf("address out of range\n");return 1;- }
- return 0;
}
Hi Chin,
if you strip down functionality of "check_params()" to one single check I would recommend you to remove "check_params()" at all and do in-place check for "buffer" existence.
Moreover you may just use "assert" for this check because this buffer is passed by u-boot (no need to check every parameter passed to any function in run-time) so in production/release build it won't exist at all.
Regards, Alexey