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| author | Howard Su <[email protected]> | 2021-02-28 16:42:27 +0800 |
|---|---|---|
| committer | Howard Su <[email protected]> | 2021-02-28 16:42:27 +0800 |
| commit | 5a184c19b21bcc946697b8c83f6a43b6200aa02f (patch) | |
| tree | 6c5edd16b032834e25ed9f515d392acb1e2e6613 /components/drivers/i2c | |
| parent | 2bf53d315d62bd199c01fd2d6a7f05d1a6712153 (diff) | |
Return when i2c transfer 0 messages
msg->flags is accessed without proper intialized msg variable.
Diffstat (limited to 'components/drivers/i2c')
| -rw-r--r-- | components/drivers/i2c/i2c-bit-ops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/components/drivers/i2c/i2c-bit-ops.c b/components/drivers/i2c/i2c-bit-ops.c index 96af567a1e..3a9b4efeb3 100644 --- a/components/drivers/i2c/i2c-bit-ops.c +++ b/components/drivers/i2c/i2c-bit-ops.c @@ -375,6 +375,8 @@ static rt_size_t i2c_bit_xfer(struct rt_i2c_bus_device *bus, rt_int32_t i, ret; rt_uint16_t ignore_nack; + if (num == 0) return 0; + for (i = 0; i < num; i++) { msg = &msgs[i]; |