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Mon, 13 Jun 2022 08:32:27 -0700 Received: from mtkmbs10n1.mediatek.inc (172.21.101.34) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 13 Jun 2022 08:32:25 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Mon, 13 Jun 2022 23:32:24 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 13 Jun 2022 23:32:24 +0800 Message-ID: <77d3ba88b76dcdb973fb078263513c595e911c14.camel@mediatek.com> Subject: Re: [PATCH] mt76: mt7921s: fix possible sdio deadlock in command fail From: Deren Wu To: Lorenzo Bianconi CC: Felix Fietkau , Sean Wang , "Soul Huang" , YN Chen , Leon Yen , Eric-SY Chang , KM Lin , Robin Chiu , CH Yeh , Posh Sun , Eric Liang , Stella Chang , "Evelyn Tsai" , Ryder Lee , "Shayne Chen" , linux-wireless , linux-mediatek Date: Mon, 13 Jun 2022 23:32:24 +0800 In-Reply-To: References: <7122534ce50527e099a23fa198683a0e20c6db38.1654998031.git.deren.wu@mediatek.com> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220613_083240_063899_6C703B49 X-CRM114-Status: GOOD ( 20.96 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Mon, 2022-06-13 at 14:21 +0200, Lorenzo Bianconi wrote: > > From: Deren Wu > > > > Move sdio_release_host() to final resource handing > > > > Fixes: b12deb5e86fa ("mt76: mt7921s: fix > > mt7921s_mcu_[fw|drv]_pmctrl") > > Reported-by: YN Chen > > Signed-off-by: Deren Wu > > --- > > drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > > b/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > > index 54a5c712a3c3..1856d677fff4 100644 > > --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > > @@ -156,9 +156,9 @@ int mt7921s_mcu_fw_pmctrl(struct mt7921_dev > > *dev) > > > > err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status, > > !(status & WHLPCR_IS_DRIVER_OWN), > > 2000, 1000000); > > +err: > > sdio_release_host(func); > > > > -err: > > if (err < 0) { > > dev_err(dev->mt76.dev, "firmware own failed\n"); > > clear_bit(MT76_STATE_PM, &mphy->state); > > -- > > 2.18.0 > > > > Hi Deren, > > in order to align the code with mt7921e, can you please fold the > following > changes into this patch? > > Regards, > Lorenzo > Hi Lore, Sure, I will post v2 with your patch. Thanks, Deren > --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio_mcu.c > @@ -135,8 +135,8 @@ int mt7921s_mcu_fw_pmctrl(struct mt7921_dev *dev) > struct sdio_func *func = dev->mt76.sdio.func; > struct mt76_phy *mphy = &dev->mt76.phy; > struct mt76_connac_pm *pm = &dev->pm; > - int err = 0; > u32 status; > + int err; > > sdio_claim_host(func); > > @@ -147,7 +147,7 @@ int mt7921s_mcu_fw_pmctrl(struct mt7921_dev *dev) > 2000, 1000000); > if (err < 0) { > dev_err(dev->mt76.dev, "mailbox ACK not > cleared\n"); > - goto err; > + goto out; > } > } > > @@ -155,18 +155,18 @@ int mt7921s_mcu_fw_pmctrl(struct mt7921_dev > *dev) > > err = readx_poll_timeout(mt76s_read_pcr, &dev->mt76, status, > !(status & WHLPCR_IS_DRIVER_OWN), > 2000, 1000000); > -err: > +out: > sdio_release_host(func); > > if (err < 0) { > dev_err(dev->mt76.dev, "firmware own failed\n"); > clear_bit(MT76_STATE_PM, &mphy->state); > - err = -EIO; > + return -EIO; > } > > pm->stats.last_doze_event = jiffies; > pm->stats.awake_time += pm->stats.last_doze_event - > pm->stats.last_wake_event; > > - return err; > + return 0; > } > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek