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| author | Bartosz Golaszewski <bartekgola@gmail.com> | 2015-10-27 17:15:05 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2015-11-01 20:55:10 +0100 |
| commit | 5ed6989d805535804fcd05ddc777fbae48d21f3a (patch) | |
| tree | 3a0467badbd64afecacb63c931651db9597234ca | |
| parent | 74bb9d5e63b0928ceac57fedd4a2d383129ade7d (diff) | |
| download | busybox-5ed6989d805535804fcd05ddc777fbae48d21f3a.tar.gz | |
i2cdump: display the numeric value for block read ioctl() errors
This makes busybox i2cdump compatible with the upstream version, which
also displays the numeric error value in case of a block read failure.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | miscutils/i2c_tools.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c index 7be489036..e19d851fe 100644 --- a/miscutils/i2c_tools.c +++ b/miscutils/i2c_tools.c @@ -732,8 +732,10 @@ static int read_block_data(int buf_fd, int mode, int *block) tmp = i2c_smbus_read_i2c_block_data( buf_fd, res, I2C_SMBUS_BLOCK_MAX, cblock + res); - if (tmp <= 0) + if (tmp <= 0) { + blen = tmp; goto fail; + } } if (res >= I2CDUMP_NUM_REGS) @@ -750,7 +752,7 @@ static int read_block_data(int buf_fd, int mode, int *block) return blen; fail: - bb_error_msg_and_die("block read failed"); + bb_error_msg_and_die("block read failed: %d", blen); } /* Dump all but word data. */ |