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ramips: fix ethernet driver tx completion polling

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- budget is decremented with completed frames, so don't check if done is
smaller
- ACK the interrupt before processing further frames to fix a small race
condition.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 44234
This commit is contained in:
Felix Fietkau 2015-02-01 08:20:37 +00:00
parent 12c7c25398
commit 10c8d8c483
1 changed files with 2 additions and 2 deletions
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4
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
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@ -902,11 +902,11 @@ txpoll_again:
if (!done) if (!done)
return 0; return 0;
if (done < budget) { if (budget) {
fe_reg_w32(tx_intr, FE_REG_FE_INT_STATUS);
hwidx = fe_reg_r32(FE_REG_TX_DTX_IDX0); hwidx = fe_reg_r32(FE_REG_TX_DTX_IDX0);
if (idx != hwidx) if (idx != hwidx)
goto txpoll_again; goto txpoll_again;
fe_reg_w32(tx_intr, FE_REG_FE_INT_STATUS);
} }
netdev_completed_queue(netdev, done, bytes_compl); netdev_completed_queue(netdev, done, bytes_compl);