rtlwifi: fix the wrong size to calculate fifo space
Give correct fifo size to calculate fifo space. Fortunately, the values of RTL_PCI_MAX_RX_COUNT and TX_DESC_NUM_92E are the same in old code, so it still works. Signed-off-by: Steven Ting <steventing@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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@ -320,10 +320,10 @@ static inline void pci_write32_async(struct rtl_priv *rtlpriv,
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writel(val, (u8 __iomem *)rtlpriv->io.pci_mem_start + addr);
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}
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static inline u16 calc_fifo_space(u16 rp, u16 wp)
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static inline u16 calc_fifo_space(u16 rp, u16 wp, u16 size)
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{
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if (rp <= wp)
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return RTL_PCI_MAX_RX_COUNT - 1 + rp - wp;
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return size - 1 + rp - wp;
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return rp - wp - 1;
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}
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@ -498,7 +498,8 @@ u16 rtl92ee_rx_desc_buff_remained_cnt(struct ieee80211_hw *hw, u8 queue_index)
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if (!start_rx)
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return 0;
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remind_cnt = calc_fifo_space(read_point, write_point);
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remind_cnt = calc_fifo_space(read_point, write_point,
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RTL_PCI_MAX_RX_COUNT);
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if (remind_cnt == 0)
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return 0;
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@ -560,7 +561,8 @@ u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
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current_tx_write_point = (u16)((tmp_4byte) & 0x0fff);
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point_diff = calc_fifo_space(current_tx_read_point,
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current_tx_write_point);
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current_tx_write_point,
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TX_DESC_NUM_92E);
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rtlpci->tx_ring[q_idx].avl_desc = point_diff;
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return point_diff;
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