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net: ethernet: ti: cpdma: fit rated channels in backward order

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According to TRM tx rated channels should be in 7..0 order,
so correct it.

Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Khoronzhuk 2018-07-24 00:26:30 +03:00 committed by David S. Miller
parent 79b3325d0d
commit 4bb6c356a0
1 changed files with 15 additions and 16 deletions
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31
drivers/net/ethernet/ti/davinci_cpdma.c
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@ -406,37 +406,36 @@ static int cpdma_chan_fit_rate(struct cpdma_chan *ch, u32 rate,
struct cpdma_chan *chan;
u32 old_rate = ch->rate;
u32 new_rmask = 0;
int rlim = 1;
int rlim = 0;
int i;
*prio_mode = 0;
for (i = tx_chan_num(0); i < tx_chan_num(CPDMA_MAX_CHANNELS); i++) {
chan = ctlr->channels[i];
if (!chan) {
rlim = 0;
if (!chan)
continue;
}
if (chan == ch)
chan->rate = rate;
if (chan->rate) {
if (rlim) {
new_rmask |= chan->mask;
} else {
ch->rate = old_rate;
dev_err(ctlr->dev, "Prev channel of %dch is not rate limited\n",
chan->chan_num);
return -EINVAL;
}
} else {
*prio_mode = 1;
rlim = 0;
rlim = 1;
new_rmask |= chan->mask;
continue;
}
if (rlim)
goto err;
}
*rmask = new_rmask;
*prio_mode = rlim;
return 0;
err:
ch->rate = old_rate;
dev_err(ctlr->dev, "Upper cpdma ch%d is not rate limited\n",
chan->chan_num);
return -EINVAL;
}
static u32 cpdma_chan_set_factors(struct cpdma_ctlr *ctlr,