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Index: qemu/hw/dma.c
@@ -344,9 +344,11 @@ static void channel_run (int ncont, int
}
#endif
- n = r->transfer_handler (r->opaque, ichan + (ncont << 2),
- r->now[COUNT], (r->base[COUNT] + 1) << ncont);
- r->now[COUNT] = n;
+ if (r->transfer_handler) {
+ n = r->transfer_handler (r->opaque, ichan + (ncont << 2),
+ r->now[COUNT], (r->base[COUNT] + 1) << ncont);
+ r->now[COUNT] = n;
+ }
ldebug ("dma_pos %d size %d\n", n, (r->base[COUNT] + 1) << ncont);
}
Index: qemu/hw/fdc.c
@@ -1322,7 +1322,8 @@
fd_sector(cur_drv));
return 0;
}
- if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
+ if (cur_drv->bs == NULL ||
+ bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
FLOPPY_DPRINTF("error getting sector %d\n",
fd_sector(cur_drv));
/* Sure, image size is too small... */
@@ -1776,7 +1777,8 @@
if (pos == FD_SECTOR_LEN - 1 ||
fdctrl->data_pos == fdctrl->data_len) {
cur_drv = get_cur_drv(fdctrl);
- if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
+ if (cur_drv->bs == NULL ||
+ bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
return;
}
Index: qemu-0.8.2/hw/sb16.c
===================================================================
--- qemu-0.8.2.orig/hw/sb16.c 2006-07-22 20:23:34.000000000 +0300
+++ qemu-0.8.2/hw/sb16.c 2007-04-20 06:05:59.000000000 +0300
@@ -1235,8 +1235,10 @@ static int SB_read_DMA (void *opaque, in
s->block_size);
#endif
- while (s->left_till_irq <= 0) {
- s->left_till_irq = s->block_size + s->left_till_irq;
+ if (s->block_size) {
+ while (s->left_till_irq <= 0) {
+ s->left_till_irq = s->block_size + s->left_till_irq;
+ }
}
return dma_pos;
Index: qemu/hw/i8259.c
@@ -291,7 +291,8 @@ static void pic_ioport_write(void *opaqu
s->init4 = val & 1;
s->single_mode = val & 2;
if (val & 0x08) {
- hw_error("level sensitive irq not supported");
+ /* hw_error("level sensitive irq not supported"); */
+ return;
}
} else if (val & 0x08) {
if (val & 0x04) {
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