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730e649bf6
introduced with the Cypress "0048-brcmfmac-reserve-2-credits-for-host-tx-control-path" patch (Reference: https://www.spinics.net/lists/linux-wireless/msg201592.html)
22 lines
924 B
Diff
22 lines
924 B
Diff
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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index e8712ad3a..50c81078a 100644
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@@ -664,9 +664,14 @@ static void pkt_align(struct sk_buff *p, int len, int align)
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/* To check if there's window offered */
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static bool data_ok(struct brcmf_sdio *bus)
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{
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- /* Reserve TXCTL_CREDITS credits for txctl */
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- return (bus->tx_max - bus->tx_seq) > TXCTL_CREDITS &&
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- ((bus->tx_max - bus->tx_seq) & 0x80) == 0;
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+ u8 tx_rsv = 0;
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+
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+ /* Reserve TXCTL_CREDITS credits for txctl when it is ready to send */
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+ if (bus->ctrl_frame_stat)
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+ tx_rsv = TXCTL_CREDITS;
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+
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+ return (bus->tx_max - bus->tx_seq - tx_rsv) != 0 &&
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+ ((bus->tx_max - bus->tx_seq - tx_rsv) & 0x80) == 0;
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}
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/* To check if there's window offered */
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