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Add implicit retries on i2c read errors.

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TODO: Make configurable.
This commit is contained in:
Jeffrey Townsend
2017-05-25 16:08:21 +00:00
parent d44784b578
commit 8419eb7653
1 changed files with 6 additions and 1 deletions
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7
packages/base/any/onlp/src/onlplib/module/src/i2c.c
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@@ -149,7 +149,12 @@ onlp_i2c_read(int bus, uint8_t addr, uint8_t offset, int size,
}
for(i = 0; i < size; i++) {
int rv = i2c_smbus_read_byte_data(fd, offset+i);
int rv = -1;
int retries = 3;
while(retries-- && rv < 0) {
rv = i2c_smbus_read_byte_data(fd, offset+i);
}
if(rv < 0) {
AIM_LOG_ERROR("i2c-%d: reading address 0x%x, offset %d failed: %{errno}",