diff options
Diffstat (limited to 'hw/i2c')
| -rw-r--r-- | hw/i2c/pm_smbus.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/i2c/pm_smbus.c b/hw/i2c/pm_smbus.c index 685a2378ed..03062740cc 100644 --- a/hw/i2c/pm_smbus.c +++ b/hw/i2c/pm_smbus.c @@ -240,6 +240,9 @@ static void smb_ioport_writeb(void *opaque, hwaddr addr, uint64_t val, uint8_t read = s->smb_addr & 0x01; s->smb_index++; + if (s->smb_index >= PM_SMBUS_MAX_MSG_SIZE) { + s->smb_index = 0; + } if (!read && s->smb_index == s->smb_data0) { uint8_t prot = (s->smb_ctl >> 2) & 0x07; uint8_t cmd = s->smb_cmd; |