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esp.c: remove TC adjustment in esp_do_dma() from device path

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Now that the TC is updated for each PDMA access (rather than once the FIFO is
full) there is no need to adjust the TC at start of each DMA transfer if the
FIFO is not empty.

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: <20240112125420.514425-25-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 12:53:16 +00:00
parent fabcba4966
commit 12486e4f6d
1 changed files with 0 additions and 5 deletions
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5
hw/scsi/esp.c
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@ -754,11 +754,6 @@ static void esp_do_dma(ESPState *s)
esp_lower_drq(s);
}
} else {
/* Adjust TC for any leftover data in the FIFO */
if (!fifo8_is_empty(&s->fifo)) {
esp_set_tc(s, esp_get_tc(s) - fifo8_num_used(&s->fifo));
}
/* Copy device data to FIFO */
len = MIN(len, fifo8_num_free(&s->fifo));
fifo8_push_all(&s->fifo, s->async_buf, len);