===================================================================
@@ -321,14 +321,6 @@ static inline void ide_abort_command(IDE
s->error = ABRT_ERR;
}
-static inline void ide_dma_submit_check(IDEState *s,
- BlockDriverCompletionFunc *dma_cb)
-{
- if (s->bus->dma->aiocb)
- return;
- dma_cb(s, -1);
-}
-
/* prepare data transfer and tell what to do after */
static void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
EndTransferFunc *end_transfer_func)
@@ -493,6 +485,7 @@ void ide_dma_cb(void *opaque, int ret)
int n;
int64_t sector_num;
+handle_rw_error:
if (ret < 0) {
int op = BM_STATUS_DMA_RETRY;
@@ -538,7 +531,11 @@ void ide_dma_cb(void *opaque, int ret)
s->bus->dma->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num,
ide_dma_cb, s);
}
- ide_dma_submit_check(s, ide_dma_cb);
+
+ if (!s->bus->dma->aiocb) {
+ ret = -1;
+ goto handle_rw_error;
+ }
return;
eot:
Merge ide_dma_submit_check into it's only caller. Also use tail recursion using a goto instead of a real recursion - this avoid overflowing the stack in the pathological situation of an recurring error that is ignored. We'll still be busy looping in ide_dma_cb, but at least won't eat up all stack space after this. Signed-off-by: Christoph Hellwig <hch@lst.de>