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esp.c: update condition for esp_dma_done() in esp_do_dma() from device path

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No change to the condition itself, other than to clarify that esp_dma_done()
must be called when TC is zero.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Helge Deller <deller@gmx.de>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240112125420.514425-21-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2024-01-12 12:53:12 +00:00
parent 27bd0cc044
commit 6b7b0030fb
1 changed files with 5 additions and 11 deletions
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16
hw/scsi/esp.c
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@ -743,19 +743,13 @@ static void esp_do_dma(ESPState *s)
if (s->async_len == 0) {
scsi_req_continue(s->current_req);
/*
* If there is still data to be read from the device then
* complete the DMA operation immediately. Otherwise defer
* until the scsi layer has completed.
*/
if (esp_get_tc(s) != 0) {
return;
}
}
/* Partially filled a scsi buffer. Complete immediately. */
esp_dma_done(s);
esp_lower_drq(s);
if (esp_get_tc(s) == 0) {
/* Partially filled a scsi buffer. Complete immediately. */
esp_dma_done(s);
esp_lower_drq(s);
}
} else {
/* Adjust TC for any leftover data in the FIFO */
if (!fifo8_is_empty(&s->fifo)) {