[PATCH] mt76: mt7921e: fix possible probe failure after reboot
Janusz Dziedzic
janusz.dziedzic at gmail.com
Thu Jan 20 22:33:34 PST 2022
pt., 21 sty 2022 o 00:23 Khalid Aziz <khalid at gonehiking.org> napisał(a):
>
> On 1/7/22 12:30 AM, sean.wang at mediatek.com wrote:
> > From: Sean Wang <sean.wang at mediatek.com>
> >
> > It doesn't guarantee the mt7921e gets started with ASPM L0 after each
> > machine reboot on every platform.
> >
> > If mt7921e gets started with not ASPM L0, it would be possible that the
> > driver encounters time to time failure in mt7921_pci_probe, like a
> > weird chip identifier is read
> >
> > [ 215.514503] mt7921e 0000:05:00.0: ASIC revision: feed0000
> > [ 216.604741] mt7921e: probe of 0000:05:00.0 failed with error -110
> >
> > or failing to init hardware because the driver is not allowed to access the
> > register until the device is in ASPM L0 state. So, we call
> > __mt7921e_mcu_drv_pmctrl in early mt7921_pci_probe to force the device
> > to bring back to the L0 state for we can safely access registers in any
> > case.
> >
BTW, probably I see something similar with mt7915e (inside ramips):
Have mt7915e in my mt7621 (mt7621-pci) router (pandora box/ramips).
After fresh start (disconnect/connect power supply/cold reset) works correctly.
After reboot seems to always fail with:
Sat Dec 18 08:43:58 2021 kern.info kernel: [ 14.552269] mt7621-pci
1e140000.pcie: bus=3 slot=2 irq=25
Sat Dec 18 08:43:58 2021 kern.info kernel: [ 14.557823] pci
0000:00:02.0: enabling device (0000 -> 0003)
Sat Dec 18 08:43:58 2021 kern.info kernel: [ 14.563499] mt7915e
0000:03:00.0: enabling device (0000 -> 0002)
Sat Dec 18 08:43:58 2021 kern.err kernel: [ 35.094270] mt7915e
0000:03:00.0: Message 00000010 (seq 1) timeout
Sat Dec 18 08:43:58 2021 kern.err kernel: [ 35.100457] mt7915e
0000:03:00.0: Failed to get patch semaphore
Sat Dec 18 08:43:58 2021 kern.err kernel: [ 55.574220] mt7915e
0000:03:00.0: Message 00000010 (seq 2) timeout
Sat Dec 18 08:43:58 2021 kern.err kernel: [ 55.580380] mt7915e
0000:03:00.0: Failed to get patch semaphore
Sat Dec 18 08:43:58 2021 kern.warn kernel: [ 55.586529] mt7915e:
probe of 0000:03:00.0 failed with error -11
This is lspci output:
02:00.0 Network controller: MEDIATEK Corp. MT7612E 802.11acbgn PCI
Express Wireless Network Adapter
03:00.0 Unclassified device [0002]: MEDIATEK Corp. MT7915E 802.11ax
PCI Express Wireless Network Adapter
Detection works correctly after disconnect/connect power supply (cold reboot).
I don't see this issue (same HW/card) with.
- my laptop x86_64
- banana_pi aarch64
Any idea this could be same/similar issue and there is possible fix for that?
BR
Janusz
> > In the patch, we move all functions from dma.c to pci.c and register mt76
> > bus operation earilier, that is the __mt7921e_mcu_drv_pmctrl depends on.
> >
> > Fixes: bf3747ae2e25 ("mt76: mt7921: enable aspm by default")
> > Reported-by: Kai-Chuan Hsieh <kaichuan.hsieh at canonical.com>
> > Co-developed-by: Deren Wu <deren.wu at mediatek.com>
> > Signed-off-by: Deren Wu <deren.wu at mediatek.com>
> > Signed-off-by: Sean Wang <sean.wang at mediatek.com>
>
>
> Tested-by: Khalid Aziz <khalid at gonehiking.org>
>
> --
> Khalid
> > ---
> > .../net/wireless/mediatek/mt76/mt7921/dma.c | 119 -----------------
> > .../wireless/mediatek/mt76/mt7921/mt7921.h | 1 +
> > .../net/wireless/mediatek/mt76/mt7921/pci.c | 124 ++++++++++++++++++
> > .../wireless/mediatek/mt76/mt7921/pci_mcu.c | 18 ++-
> > 4 files changed, 139 insertions(+), 123 deletions(-)
> >
> > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
> > index cdff1fd52d93..39d6ce4ecddd 100644
> > --- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
> > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
> > @@ -78,110 +78,6 @@ static void mt7921_dma_prefetch(struct mt7921_dev *dev)
> > mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
> > }
> >
> > -static u32 __mt7921_reg_addr(struct mt7921_dev *dev, u32 addr)
> > -{
> > - static const struct {
> > - u32 phys;
> > - u32 mapped;
> > - u32 size;
> > - } fixed_map[] = {
> > - { 0x820d0000, 0x30000, 0x10000 }, /* WF_LMAC_TOP (WF_WTBLON) */
> > - { 0x820ed000, 0x24800, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */
> > - { 0x820e4000, 0x21000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */
> > - { 0x820e7000, 0x21e00, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */
> > - { 0x820eb000, 0x24200, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */
> > - { 0x820e2000, 0x20800, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */
> > - { 0x820e3000, 0x20c00, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */
> > - { 0x820e5000, 0x21400, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */
> > - { 0x00400000, 0x80000, 0x10000 }, /* WF_MCU_SYSRAM */
> > - { 0x00410000, 0x90000, 0x10000 }, /* WF_MCU_SYSRAM (configure register) */
> > - { 0x40000000, 0x70000, 0x10000 }, /* WF_UMAC_SYSRAM */
> > - { 0x54000000, 0x02000, 0x1000 }, /* WFDMA PCIE0 MCU DMA0 */
> > - { 0x55000000, 0x03000, 0x1000 }, /* WFDMA PCIE0 MCU DMA1 */
> > - { 0x58000000, 0x06000, 0x1000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */
> > - { 0x59000000, 0x07000, 0x1000 }, /* WFDMA PCIE1 MCU DMA1 */
> > - { 0x7c000000, 0xf0000, 0x10000 }, /* CONN_INFRA */
> > - { 0x7c020000, 0xd0000, 0x10000 }, /* CONN_INFRA, WFDMA */
> > - { 0x7c060000, 0xe0000, 0x10000 }, /* CONN_INFRA, conn_host_csr_top */
> > - { 0x80020000, 0xb0000, 0x10000 }, /* WF_TOP_MISC_OFF */
> > - { 0x81020000, 0xc0000, 0x10000 }, /* WF_TOP_MISC_ON */
> > - { 0x820c0000, 0x08000, 0x4000 }, /* WF_UMAC_TOP (PLE) */
> > - { 0x820c8000, 0x0c000, 0x2000 }, /* WF_UMAC_TOP (PSE) */
> > - { 0x820cc000, 0x0e000, 0x1000 }, /* WF_UMAC_TOP (PP) */
> > - { 0x820cd000, 0x0f000, 0x1000 }, /* WF_MDP_TOP */
> > - { 0x820ce000, 0x21c00, 0x0200 }, /* WF_LMAC_TOP (WF_SEC) */
> > - { 0x820cf000, 0x22000, 0x1000 }, /* WF_LMAC_TOP (WF_PF) */
> > - { 0x820e0000, 0x20000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
> > - { 0x820e1000, 0x20400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */
> > - { 0x820e9000, 0x23400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */
> > - { 0x820ea000, 0x24000, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */
> > - { 0x820ec000, 0x24600, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_INT) */
> > - { 0x820f0000, 0xa0000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */
> > - { 0x820f1000, 0xa0600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */
> > - { 0x820f2000, 0xa0800, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */
> > - { 0x820f3000, 0xa0c00, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */
> > - { 0x820f4000, 0xa1000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */
> > - { 0x820f5000, 0xa1400, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */
> > - { 0x820f7000, 0xa1e00, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */
> > - { 0x820f9000, 0xa3400, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */
> > - { 0x820fa000, 0xa4000, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */
> > - { 0x820fb000, 0xa4200, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */
> > - { 0x820fc000, 0xa4600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_INT) */
> > - { 0x820fd000, 0xa4800, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */
> > - };
> > - int i;
> > -
> > - if (addr < 0x100000)
> > - return addr;
> > -
> > - for (i = 0; i < ARRAY_SIZE(fixed_map); i++) {
> > - u32 ofs;
> > -
> > - if (addr < fixed_map[i].phys)
> > - continue;
> > -
> > - ofs = addr - fixed_map[i].phys;
> > - if (ofs > fixed_map[i].size)
> > - continue;
> > -
> > - return fixed_map[i].mapped + ofs;
> > - }
> > -
> > - if ((addr >= 0x18000000 && addr < 0x18c00000) ||
> > - (addr >= 0x70000000 && addr < 0x78000000) ||
> > - (addr >= 0x7c000000 && addr < 0x7c400000))
> > - return mt7921_reg_map_l1(dev, addr);
> > -
> > - dev_err(dev->mt76.dev, "Access currently unsupported address %08x\n",
> > - addr);
> > -
> > - return 0;
> > -}
> > -
> > -static u32 mt7921_rr(struct mt76_dev *mdev, u32 offset)
> > -{
> > - struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > - u32 addr = __mt7921_reg_addr(dev, offset);
> > -
> > - return dev->bus_ops->rr(mdev, addr);
> > -}
> > -
> > -static void mt7921_wr(struct mt76_dev *mdev, u32 offset, u32 val)
> > -{
> > - struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > - u32 addr = __mt7921_reg_addr(dev, offset);
> > -
> > - dev->bus_ops->wr(mdev, addr, val);
> > -}
> > -
> > -static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
> > -{
> > - struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > - u32 addr = __mt7921_reg_addr(dev, offset);
> > -
> > - return dev->bus_ops->rmw(mdev, addr, mask, val);
> > -}
> > -
> > static int mt7921_dma_disable(struct mt7921_dev *dev, bool force)
> > {
> > if (force) {
> > @@ -341,23 +237,8 @@ int mt7921_wpdma_reinit_cond(struct mt7921_dev *dev)
> >
> > int mt7921_dma_init(struct mt7921_dev *dev)
> > {
> > - struct mt76_bus_ops *bus_ops;
> > int ret;
> >
> > - dev->phy.dev = dev;
> > - dev->phy.mt76 = &dev->mt76.phy;
> > - dev->mt76.phy.priv = &dev->phy;
> > - dev->bus_ops = dev->mt76.bus;
> > - bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
> > - GFP_KERNEL);
> > - if (!bus_ops)
> > - return -ENOMEM;
> > -
> > - bus_ops->rr = mt7921_rr;
> > - bus_ops->wr = mt7921_wr;
> > - bus_ops->rmw = mt7921_rmw;
> > - dev->mt76.bus = bus_ops;
> > -
> > mt76_dma_attach(&dev->mt76);
> >
> > ret = mt7921_dma_disable(dev, true);
> > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > index 8b674e042568..63e3c7ef5e89 100644
> > --- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> > @@ -443,6 +443,7 @@ int mt7921e_mcu_init(struct mt7921_dev *dev);
> > int mt7921s_wfsys_reset(struct mt7921_dev *dev);
> > int mt7921s_mac_reset(struct mt7921_dev *dev);
> > int mt7921s_init_reset(struct mt7921_dev *dev);
> > +int __mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev);
> > int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev);
> > int mt7921e_mcu_fw_pmctrl(struct mt7921_dev *dev);
> >
> > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> > index 1ae0d5826ca7..a0c82d19c4d9 100644
> > --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> > @@ -121,6 +121,110 @@ static void mt7921e_unregister_device(struct mt7921_dev *dev)
> > mt76_free_device(&dev->mt76);
> > }
> >
> > +static u32 __mt7921_reg_addr(struct mt7921_dev *dev, u32 addr)
> > +{
> > + static const struct {
> > + u32 phys;
> > + u32 mapped;
> > + u32 size;
> > + } fixed_map[] = {
> > + { 0x820d0000, 0x30000, 0x10000 }, /* WF_LMAC_TOP (WF_WTBLON) */
> > + { 0x820ed000, 0x24800, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */
> > + { 0x820e4000, 0x21000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */
> > + { 0x820e7000, 0x21e00, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */
> > + { 0x820eb000, 0x24200, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */
> > + { 0x820e2000, 0x20800, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */
> > + { 0x820e3000, 0x20c00, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */
> > + { 0x820e5000, 0x21400, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */
> > + { 0x00400000, 0x80000, 0x10000 }, /* WF_MCU_SYSRAM */
> > + { 0x00410000, 0x90000, 0x10000 }, /* WF_MCU_SYSRAM (configure register) */
> > + { 0x40000000, 0x70000, 0x10000 }, /* WF_UMAC_SYSRAM */
> > + { 0x54000000, 0x02000, 0x1000 }, /* WFDMA PCIE0 MCU DMA0 */
> > + { 0x55000000, 0x03000, 0x1000 }, /* WFDMA PCIE0 MCU DMA1 */
> > + { 0x58000000, 0x06000, 0x1000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */
> > + { 0x59000000, 0x07000, 0x1000 }, /* WFDMA PCIE1 MCU DMA1 */
> > + { 0x7c000000, 0xf0000, 0x10000 }, /* CONN_INFRA */
> > + { 0x7c020000, 0xd0000, 0x10000 }, /* CONN_INFRA, WFDMA */
> > + { 0x7c060000, 0xe0000, 0x10000 }, /* CONN_INFRA, conn_host_csr_top */
> > + { 0x80020000, 0xb0000, 0x10000 }, /* WF_TOP_MISC_OFF */
> > + { 0x81020000, 0xc0000, 0x10000 }, /* WF_TOP_MISC_ON */
> > + { 0x820c0000, 0x08000, 0x4000 }, /* WF_UMAC_TOP (PLE) */
> > + { 0x820c8000, 0x0c000, 0x2000 }, /* WF_UMAC_TOP (PSE) */
> > + { 0x820cc000, 0x0e000, 0x1000 }, /* WF_UMAC_TOP (PP) */
> > + { 0x820cd000, 0x0f000, 0x1000 }, /* WF_MDP_TOP */
> > + { 0x820ce000, 0x21c00, 0x0200 }, /* WF_LMAC_TOP (WF_SEC) */
> > + { 0x820cf000, 0x22000, 0x1000 }, /* WF_LMAC_TOP (WF_PF) */
> > + { 0x820e0000, 0x20000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
> > + { 0x820e1000, 0x20400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */
> > + { 0x820e9000, 0x23400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */
> > + { 0x820ea000, 0x24000, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */
> > + { 0x820ec000, 0x24600, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_INT) */
> > + { 0x820f0000, 0xa0000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */
> > + { 0x820f1000, 0xa0600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */
> > + { 0x820f2000, 0xa0800, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */
> > + { 0x820f3000, 0xa0c00, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */
> > + { 0x820f4000, 0xa1000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */
> > + { 0x820f5000, 0xa1400, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */
> > + { 0x820f7000, 0xa1e00, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */
> > + { 0x820f9000, 0xa3400, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */
> > + { 0x820fa000, 0xa4000, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */
> > + { 0x820fb000, 0xa4200, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */
> > + { 0x820fc000, 0xa4600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_INT) */
> > + { 0x820fd000, 0xa4800, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */
> > + };
> > + int i;
> > +
> > + if (addr < 0x100000)
> > + return addr;
> > +
> > + for (i = 0; i < ARRAY_SIZE(fixed_map); i++) {
> > + u32 ofs;
> > +
> > + if (addr < fixed_map[i].phys)
> > + continue;
> > +
> > + ofs = addr - fixed_map[i].phys;
> > + if (ofs > fixed_map[i].size)
> > + continue;
> > +
> > + return fixed_map[i].mapped + ofs;
> > + }
> > +
> > + if ((addr >= 0x18000000 && addr < 0x18c00000) ||
> > + (addr >= 0x70000000 && addr < 0x78000000) ||
> > + (addr >= 0x7c000000 && addr < 0x7c400000))
> > + return mt7921_reg_map_l1(dev, addr);
> > +
> > + dev_err(dev->mt76.dev, "Access currently unsupported address %08x\n",
> > + addr);
> > +
> > + return 0;
> > +}
> > +
> > +static u32 mt7921_rr(struct mt76_dev *mdev, u32 offset)
> > +{
> > + struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > + u32 addr = __mt7921_reg_addr(dev, offset);
> > +
> > + return dev->bus_ops->rr(mdev, addr);
> > +}
> > +
> > +static void mt7921_wr(struct mt76_dev *mdev, u32 offset, u32 val)
> > +{
> > + struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > + u32 addr = __mt7921_reg_addr(dev, offset);
> > +
> > + dev->bus_ops->wr(mdev, addr, val);
> > +}
> > +
> > +static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
> > +{
> > + struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
> > + u32 addr = __mt7921_reg_addr(dev, offset);
> > +
> > + return dev->bus_ops->rmw(mdev, addr, mask, val);
> > +}
> > +
> > static int mt7921_pci_probe(struct pci_dev *pdev,
> > const struct pci_device_id *id)
> > {
> > @@ -152,6 +256,7 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
> > .fw_own = mt7921e_mcu_fw_pmctrl,
> > };
> >
> > + struct mt76_bus_ops *bus_ops;
> > struct mt7921_dev *dev;
> > struct mt76_dev *mdev;
> > int ret;
> > @@ -189,6 +294,25 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
> >
> > mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
> > tasklet_init(&dev->irq_tasklet, mt7921_irq_tasklet, (unsigned long)dev);
> > +
> > + dev->phy.dev = dev;
> > + dev->phy.mt76 = &dev->mt76.phy;
> > + dev->mt76.phy.priv = &dev->phy;
> > + dev->bus_ops = dev->mt76.bus;
> > + bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
> > + GFP_KERNEL);
> > + if (!bus_ops)
> > + return -ENOMEM;
> > +
> > + bus_ops->rr = mt7921_rr;
> > + bus_ops->wr = mt7921_wr;
> > + bus_ops->rmw = mt7921_rmw;
> > + dev->mt76.bus = bus_ops;
> > +
> > + ret = __mt7921e_mcu_drv_pmctrl(dev);
> > + if (ret)
> > + return ret;
> > +
> > mdev->rev = (mt7921_l1_rr(dev, MT_HW_CHIPID) << 16) |
> > (mt7921_l1_rr(dev, MT_HW_REV) & 0xff);
> > dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
> > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
> > index f9e350b67fdc..36669e5aeef3 100644
> > --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
> > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
> > @@ -59,10 +59,8 @@ int mt7921e_mcu_init(struct mt7921_dev *dev)
> > return err;
> > }
> >
> > -int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
> > +int __mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
> > {
> > - struct mt76_phy *mphy = &dev->mt76.phy;
> > - struct mt76_connac_pm *pm = &dev->pm;
> > int i, err = 0;
> >
> > for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
> > @@ -75,9 +73,21 @@ int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
> > if (i == MT7921_DRV_OWN_RETRY_COUNT) {
> > dev_err(dev->mt76.dev, "driver own failed\n");
> > err = -EIO;
> > - goto out;
> > }
> >
> > + return err;
> > +}
> > +
> > +int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
> > +{
> > + struct mt76_phy *mphy = &dev->mt76.phy;
> > + struct mt76_connac_pm *pm = &dev->pm;
> > + int err;
> > +
> > + err = __mt7921e_mcu_drv_pmctrl(dev);
> > + if (err < 0)
> > + goto out;
> > +
> > mt7921_wpdma_reinit_cond(dev);
> > clear_bit(MT76_STATE_PM, &mphy->state);
> >
>
>
--
Janusz Dziedzic
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