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| author | Denys Drozdov <denys.drozdov@toradex.com> | 2022-01-10 13:54:25 +0200 |
|---|---|---|
| committer | Denys Drozdov <denys.drozdov@toradex.com> | 2022-01-10 13:54:25 +0200 |
| commit | 755960f3c9336fe5fd4d9607c12c0edcff8f04c5 (patch) | |
| tree | 8f3b10fe1edc98a144b975bd553c0bb973159294 /drivers/net/wireless/marvell/mwifiex/pcie.c | |
| parent | 73d0438130d3728b034835168028bc44a94bd812 (diff) | |
| parent | 5c088fba39aff97ae9175948356ef3292369671c (diff) | |
Merge tag 'v5.4.161' into toradex_5.4.y
This is the 5.4.161 stable release
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/pcie.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/pcie.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index bc46a0aa06eb..b316e3491795 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -1326,6 +1326,14 @@ mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb, ret = -1; goto done_unmap; } + + /* The firmware (latest version 15.68.19.p21) of the 88W8897 PCIe+USB card + * seems to crash randomly after setting the TX ring write pointer when + * ASPM powersaving is enabled. A workaround seems to be keeping the bus + * busy by reading a random register afterwards. + */ + mwifiex_read_reg(adapter, PCI_VENDOR_ID, &rx_val); + if ((mwifiex_pcie_txbd_not_full(card)) && tx_param->next_pkt_len) { /* have more packets and TxBD still can hold more */ |