diff options
| -rw-r--r-- | miscutils/i2c_tools.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c index 6d221e9fc..7be489036 100644 --- a/miscutils/i2c_tools.c +++ b/miscutils/i2c_tools.c @@ -724,16 +724,16 @@ static int read_block_data(int buf_fd, int mode, int *block) int res, blen = 0, tmp, i; if (mode == I2C_SMBUS_BLOCK_DATA) { - res = i2c_smbus_read_block_data(buf_fd, 0, cblock); - blen = res; + blen = i2c_smbus_read_block_data(buf_fd, 0, cblock); + if (blen <= 0) + goto fail; } else { for (res = 0; res < I2CDUMP_NUM_REGS; res += tmp) { tmp = i2c_smbus_read_i2c_block_data( buf_fd, res, I2C_SMBUS_BLOCK_MAX, cblock + res); - if (tmp < 0) { - bb_error_msg_and_die("block read failed"); - } + if (tmp <= 0) + goto fail; } if (res >= I2CDUMP_NUM_REGS) @@ -748,6 +748,9 @@ static int read_block_data(int buf_fd, int mode, int *block) } return blen; + + fail: + bb_error_msg_and_die("block read failed"); } /* Dump all but word data. */ |