diff options
| -rw-r--r-- | hw/ppc/pnv_i2c.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/ppc/pnv_i2c.c b/hw/ppc/pnv_i2c.c index f75e59e..483d91d 100644 --- a/hw/ppc/pnv_i2c.c +++ b/hw/ppc/pnv_i2c.c @@ -151,6 +151,7 @@ #define I2C_RESET_S_SDA_REG 0x11 #define PNV_I2C_FIFO_SIZE 8 +#define PNV_I2C_MAX_BUSSES 64 static I2CBus *pnv_i2c_get_bus(PnvI2C *i2c) { @@ -437,7 +438,7 @@ static uint64_t pnv_i2c_xscom_read(void *opaque, hwaddr addr, case I2C_PORT_BUSY_REG: /* compute busy bit for each port */ val = 0; for (i = 0; i < i2c->num_busses; i++) { - val |= i2c_bus_busy(i2c->busses[i]) << i; + val |= (uint64_t)i2c_bus_busy(i2c->busses[i]) << i; } break; @@ -641,6 +642,11 @@ static void pnv_i2c_realize(DeviceState *dev, Error **errp) assert(i2c->chip); + if (i2c->num_busses > PNV_I2C_MAX_BUSSES) { + error_setg(errp, "Invalid number of busses: %u", i2c->num_busses); + return; + } + pnv_xscom_region_init(&i2c->xscom_regs, OBJECT(i2c), &pnv_i2c_xscom_ops, i2c, "xscom-i2c", PNV9_XSCOM_I2CM_SIZE); |