提交 8c53e42d 编写于 作者: A Amitkumar Karwar 提交者: John W. Linville

mwifiex: failure case handling for PCIe events

Event buffers for PCIe interface are allocated during driver
initialisation, and respective physical addresses are sent to FW
in *_PCIE_DESC_DETAILS command so that FW can do DMA. These buffers
will be freed while unloading the driver. Therefore we should not
free them in event handling error path. Also we should skip next
pending events in failure case.

Also fixed 'returning -1 instead of -ENOMEM is sloppy' warnings.
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
上级 b0327ffa
master alk-4.19.24 alk-4.19.30 alk-4.19.34 alk-4.19.36 alk-4.19.43 alk-4.19.48 alk-4.19.57 ck-4.19.67 ck-4.19.81 ck-4.19.91 github/fork/deepanshu1422/fix-typo-in-comment github/fork/haosdent/fix-typo linux-next v4.19.91 v4.19.90 v4.19.89 v4.19.88 v4.19.87 v4.19.86 v4.19.85 v4.19.84 v4.19.83 v4.19.82 v4.19.81 v4.19.80 v4.19.79 v4.19.78 v4.19.77 v4.19.76 v4.19.75 v4.19.74 v4.19.73 v4.19.72 v4.19.71 v4.19.70 v4.19.69 v4.19.68 v4.19.67 v4.19.66 v4.19.65 v4.19.64 v4.19.63 v4.19.62 v4.19.61 v4.19.60 v4.19.59 v4.19.58 v4.19.57 v4.19.56 v4.19.55 v4.19.54 v4.19.53 v4.19.52 v4.19.51 v4.19.50 v4.19.49 v4.19.48 v4.19.47 v4.19.46 v4.19.45 v4.19.44 v4.19.43 v4.19.42 v4.19.41 v4.19.40 v4.19.39 v4.19.38 v4.19.37 v4.19.36 v4.19.35 v4.19.34 v4.19.33 v4.19.32 v4.19.31 v4.19.30 v4.19.29 v4.19.28 v4.19.27 v4.19.26 v4.19.25 v4.19.24 v4.19.23 v4.19.22 v4.19.21 v4.19.20 v4.19.19 v4.19.18 v4.19.17 v4.19.16 v4.19.15 v4.19.14 v4.19.13 v4.19.12 v4.19.11 v4.19.10 v4.19.9 v4.19.8 v4.19.7 v4.19.6 v4.19.5 v4.19.4 v4.19.3 v4.19.2 v4.19.1 v4.19 v4.19-rc8 v4.19-rc7 v4.19-rc6 v4.19-rc5 v4.19-rc4 v4.19-rc3 v4.19-rc2 v4.19-rc1 ck-release-21 ck-release-20 ck-release-19.2 ck-release-19.1 ck-release-19 ck-release-18 ck-release-17.2 ck-release-17.1 ck-release-17 ck-release-16 ck-release-15.1 ck-release-15 ck-release-14 ck-release-13.2 ck-release-13 ck-release-12 ck-release-11 ck-release-10 ck-release-9 ck-release-7 alk-release-15 alk-release-14 alk-release-13.2 alk-release-13 alk-release-12 alk-release-11 alk-release-10 alk-release-9 alk-release-7
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......@@ -386,7 +386,7 @@ static int mwifiex_pcie_create_txbd_ring(struct mwifiex_adapter *adapter)
card->txbd_ring_vbase = kzalloc(card->txbd_ring_size, GFP_KERNEL);
if (!card->txbd_ring_vbase) {
dev_err(adapter->dev, "Unable to allocate buffer for txbd ring.\n");
return -1;
return -ENOMEM;
}
card->txbd_ring_pbase = virt_to_phys(card->txbd_ring_vbase);
......@@ -476,7 +476,7 @@ static int mwifiex_pcie_create_rxbd_ring(struct mwifiex_adapter *adapter)
if (!card->rxbd_ring_vbase) {
dev_err(adapter->dev, "Unable to allocate buffer for "
"rxbd_ring.\n");
return -1;
return -ENOMEM;
}
card->rxbd_ring_pbase = virt_to_phys(card->rxbd_ring_vbase);
......@@ -569,7 +569,7 @@ static int mwifiex_pcie_create_evtbd_ring(struct mwifiex_adapter *adapter)
if (!card->evtbd_ring_vbase) {
dev_err(adapter->dev, "Unable to allocate buffer. "
"Terminating download\n");
return -1;
return -ENOMEM;
}
card->evtbd_ring_pbase = virt_to_phys(card->evtbd_ring_vbase);
......@@ -1231,15 +1231,13 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
if (rdptr >= MWIFIEX_MAX_EVT_BD) {
dev_err(adapter->dev, "event_complete: Invalid rdptr 0x%x\n",
rdptr);
ret = -EINVAL;
goto done;
return -EINVAL;
}
/* Read the event ring write pointer set by firmware */
if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_WRPTR\n");
ret = -1;
goto done;
return -1;
}
if (!card->evt_buf_list[rdptr]) {
......@@ -1268,15 +1266,9 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
/* Write the event ring read pointer in to REG_EVTBD_RDPTR */
if (mwifiex_write_reg(adapter, REG_EVTBD_RDPTR, card->evtbd_rdptr)) {
dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_RDPTR\n");
ret = -1;
goto done;
return -1;
}
done:
/* Free the buffer for failure case */
if (ret && skb)
dev_kfree_skb_any(skb);
dev_dbg(adapter->dev, "info: Check Events Again\n");
ret = mwifiex_pcie_process_event_ready(adapter);
......
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