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rtw88: Remove unnecessary check code

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The rtw_pci_init_rx_ring function is only ever called with a fixed
constant or RTK_MAX_RX_DESC_NUM for the "len" argument. Since this
constant is defined as 512, the "if (len > TRX_BD_IDX_MASK)" check
can never happen (TRX_BD_IDX_MASK is defined as GENMASK(11, 0) or in
other words as 4095).

So, remove this check.

The true motivation for this patch is to silence a false Coverity
warning.

Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Len Baker <len.baker@gmx.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210731163546.10753-1-len.baker@gmx.com
This commit is contained in:
Len Baker 2021-07-31 18:35:46 +02:00 committed by Kalle Valo
parent 69c7044526
commit d816ce8744
1 changed files with 0 additions and 5 deletions
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5
drivers/net/wireless/realtek/rtw88/pci.c
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@ -268,11 +268,6 @@ static int rtw_pci_init_rx_ring(struct rtw_dev *rtwdev,
int i, allocated;
int ret = 0;
if (len > TRX_BD_IDX_MASK) {
rtw_err(rtwdev, "len %d exceeds maximum RX entries\n", len);
return -EINVAL;
}
head = dma_alloc_coherent(&pdev->dev, ring_sz, &dma, GFP_KERNEL);
if (!head) {
rtw_err(rtwdev, "failed to allocate rx ring\n");