| Message ID | 20241030022753.2045-1-rex.nie@jaguarmicro.com |
|---|---|
| State | Accepted |
| Commit | 029778a4fd2c90c2e76a902b797c2348a722f1b8 |
| Headers | show |
| Series | [v2] usb: typec: qcom-pmic: init value of hdr_len/txbuf_len earlier | expand |
On Wed, Oct 30, 2024 at 09:36:32PM GMT, Rex Nie wrote: > If the read of USB_PDPHY_RX_ACKNOWLEDGE_REG failed, then hdr_len and > txbuf_len are uninitialized. This commit stops to print uninitialized > value and misleading/false data. > > Cc: stable@vger.kernel.org > Fixes: a4422ff22142 (" usb: typec: qcom: Add Qualcomm PMIC Type-C driver") > Signed-off-by: Rex Nie <rex.nie@jaguarmicro.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Nice job. Next time, please don't use In-Reply-To between patch versions. Regards, Bjorn > --- > V2 -> V3: > - add changelog, add Fixes tag, add Cc stable ml. Thanks heikki > - Link to v2: https://lore.kernel.org/all/20241030022753.2045-1-rex.nie@jaguarmicro.com/ > V1 -> V2: > - keep printout when data didn't transmit, thanks Bjorn, bod, greg k-h > - Links: https://lore.kernel.org/all/b177e736-e640-47ed-9f1e-ee65971dfc9c@linaro.org/ > --- > drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > index 5b7f52b74a40..726423684bae 100644 > --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > @@ -227,6 +227,10 @@ qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy *pmic_typec_pd > > spin_lock_irqsave(&pmic_typec_pdphy->lock, flags); > > + hdr_len = sizeof(msg->header); > + txbuf_len = pd_header_cnt_le(msg->header) * 4; > + txsize_len = hdr_len + txbuf_len - 1; > + > ret = regmap_read(pmic_typec_pdphy->regmap, > pmic_typec_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, > &val); > @@ -244,10 +248,6 @@ qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy *pmic_typec_pd > if (ret) > goto done; > > - hdr_len = sizeof(msg->header); > - txbuf_len = pd_header_cnt_le(msg->header) * 4; > - txsize_len = hdr_len + txbuf_len - 1; > - > /* Write message header sizeof(u16) to USB_PDPHY_TX_BUFFER_HDR_REG */ > ret = regmap_bulk_write(pmic_typec_pdphy->regmap, > pmic_typec_pdphy->base + USB_PDPHY_TX_BUFFER_HDR_REG, > -- > 2.17.1 > >
Bjorn, Ok, get it, Thanks. BRs Rex > -----邮件原件----- > 发件人: Bjorn Andersson <andersson@kernel.org> > 发送时间: 2024年11月1日 23:45 > 收件人: Rex Nie <rex.nie@jaguarmicro.com> > 抄送: bryan.odonoghue@linaro.org; heikki.krogerus@linux.intel.com; > gregkh@linuxfoundation.org; linux@roeck-us.net; caleb.connolly@linaro.org; > linux-arm-msm@vger.kernel.org; linux-usb@vger.kernel.org; > linux-kernel@vger.kernel.org; Angus Chen <angus.chen@jaguarmicro.com>; > stable@vger.kernel.org > 主题: Re: [PATCH v4] usb: typec: qcom-pmic: init value of hdr_len/txbuf_len > earlier > > External Mail: This email originated from OUTSIDE of the organization! > Do not click links, open attachments or provide ANY information unless you > recognize the sender and know the content is safe. > > > On Wed, Oct 30, 2024 at 09:36:32PM GMT, Rex Nie wrote: > > If the read of USB_PDPHY_RX_ACKNOWLEDGE_REG failed, then hdr_len and > > txbuf_len are uninitialized. This commit stops to print uninitialized > > value and misleading/false data. > > > > Cc: stable@vger.kernel.org > > Fixes: a4422ff22142 (" usb: typec: qcom: Add Qualcomm PMIC Type-C > > driver") > > Signed-off-by: Rex Nie <rex.nie@jaguarmicro.com> > > Reviewed-by: Bjorn Andersson <andersson@kernel.org> > > Nice job. Next time, please don't use In-Reply-To between patch versions. > > Regards, > Bjorn > > > --- > > V2 -> V3: > > - add changelog, add Fixes tag, add Cc stable ml. Thanks heikki > > - Link to v2: > > https://lore.kernel.org/all/20241030022753.2045-1-rex.nie@jaguarmicro. > > com/ > > V1 -> V2: > > - keep printout when data didn't transmit, thanks Bjorn, bod, greg k-h > > - Links: > > https://lore.kernel.org/all/b177e736-e640-47ed-9f1e-ee65971dfc9c@linar > > o.org/ > > --- > > drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c | 8 ++++---- > > 1 file changed, 4 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > > b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > > index 5b7f52b74a40..726423684bae 100644 > > --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > > +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c > > @@ -227,6 +227,10 @@ > qcom_pmic_typec_pdphy_pd_transmit_payload(struct > > pmic_typec_pdphy *pmic_typec_pd > > > > spin_lock_irqsave(&pmic_typec_pdphy->lock, flags); > > > > + hdr_len = sizeof(msg->header); > > + txbuf_len = pd_header_cnt_le(msg->header) * 4; > > + txsize_len = hdr_len + txbuf_len - 1; > > + > > ret = regmap_read(pmic_typec_pdphy->regmap, > > pmic_typec_pdphy->base + > USB_PDPHY_RX_ACKNOWLEDGE_REG, > > &val); > > @@ -244,10 +248,6 @@ > qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy > *pmic_typec_pd > > if (ret) > > goto done; > > > > - hdr_len = sizeof(msg->header); > > - txbuf_len = pd_header_cnt_le(msg->header) * 4; > > - txsize_len = hdr_len + txbuf_len - 1; > > - > > /* Write message header sizeof(u16) to > USB_PDPHY_TX_BUFFER_HDR_REG */ > > ret = regmap_bulk_write(pmic_typec_pdphy->regmap, > > pmic_typec_pdphy->base + > > USB_PDPHY_TX_BUFFER_HDR_REG, > > -- > > 2.17.1 > > > >
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c index 5b7f52b74a40..726423684bae 100644 --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c @@ -227,6 +227,10 @@ qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy *pmic_typec_pd spin_lock_irqsave(&pmic_typec_pdphy->lock, flags); + hdr_len = sizeof(msg->header); + txbuf_len = pd_header_cnt_le(msg->header) * 4; + txsize_len = hdr_len + txbuf_len - 1; + ret = regmap_read(pmic_typec_pdphy->regmap, pmic_typec_pdphy->base + USB_PDPHY_RX_ACKNOWLEDGE_REG, &val); @@ -244,10 +248,6 @@ qcom_pmic_typec_pdphy_pd_transmit_payload(struct pmic_typec_pdphy *pmic_typec_pd if (ret) goto done; - hdr_len = sizeof(msg->header); - txbuf_len = pd_header_cnt_le(msg->header) * 4; - txsize_len = hdr_len + txbuf_len - 1; - /* Write message header sizeof(u16) to USB_PDPHY_TX_BUFFER_HDR_REG */ ret = regmap_bulk_write(pmic_typec_pdphy->regmap, pmic_typec_pdphy->base + USB_PDPHY_TX_BUFFER_HDR_REG,
If the read of USB_PDPHY_RX_ACKNOWLEDGE_REG failed, then hdr_len and txbuf_len are uninitialized. This commit stops to print uninitialized value and misleading/false data. Signed-off-by: Rex Nie <rex.nie@jaguarmicro.com> --- drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)