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LPT ports now no longer use the LPT device functions if priv is NULL.

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This commit is contained in:
OBattler
2021-01-06 06:32:19 +01:00
parent 593b3adcfe
commit 08cc692173
1 changed files with 5 additions and 5 deletions
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10
src/lpt.c
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@@ -108,7 +108,7 @@ lpt_write(uint16_t port, uint8_t val, void *priv)
switch (port & 3) {
case 0:
if (dev->dt && dev->dt->write_data)
if (dev->dt && dev->dt->write_data && dev->priv)
dev->dt->write_data(val, dev->priv);
dev->dat = val;
break;
@@ -117,7 +117,7 @@ lpt_write(uint16_t port, uint8_t val, void *priv)
break;
case 2:
if (dev->dt && dev->dt->write_ctrl)
if (dev->dt && dev->dt->write_ctrl && dev->priv)
dev->dt->write_ctrl(val, dev->priv);
dev->ctrl = val;
dev->enable_irq = val & 0x10;
@@ -134,21 +134,21 @@ lpt_read(uint16_t port, void *priv)
switch (port & 3) {
case 0:
if (dev->dt && dev->dt->read_data)
if (dev->dt && dev->dt->read_data && dev->priv)
ret = dev->dt->read_data(dev->priv);
else
ret = dev->dat;
break;
case 1:
if (dev->dt && dev->dt->read_status)
if (dev->dt && dev->dt->read_status && dev->priv)
ret = dev->dt->read_status(dev->priv) | 0x07;
else
ret = 0xdf;
break;
case 2:
if (dev->dt && dev->dt->read_ctrl)
if (dev->dt && dev->dt->read_ctrl && dev->priv)
ret = (dev->dt->read_ctrl(dev->priv) & 0xef) | dev->enable_irq;
else
ret = 0xe0 | dev->ctrl | dev->enable_irq;