linux-kernel - Re: [PATCH v3] usb: typec: qcom-pmic: init value of hdr_len/txbuf

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Message-ID: <ZyIyd3QmUxUCqglH@kuha.fi.intel.com>
Date: Wed, 30 Oct 2024 15:19:51 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Rex Nie <rex.nie@...uarmicro.com>
Cc: bryan.odonoghue@...aro.org, gregkh@...uxfoundation.org,
	linux@...ck-us.net, caleb.connolly@...aro.org,
	linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, angus.chen@...uarmicro.com,
	stable@...r.kernel.org
Subject: Re: [PATCH v3] usb: typec: qcom-pmic: init value of
 hdr_len/txbuf_len earlier

On Wed, Oct 30, 2024 at 06:32:57PM +0800, 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.
> 
> ---
> 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/
> 
> Cc: stable@...r.kernel.org
> Fixes: a4422ff22142 (" usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
> Signed-off-by: Rex Nie <rex.nie@...uarmicro.com>

Sorry, but this is still broken.

Those tags need to come before the "---". Otherwise they will not
end-up into the actual commit when this patch is applied.

It should look something like this:

        usb: typec: qcom-pmic: init value of hdr_len/txbuf_len earlier

        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@...r.kernel.org
        Fixes: a4422ff22142 (" usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
        Signed-off-by: Rex Nie <rex.nie@...uarmicro.com>
        ---
        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...

thanks,

-- 
heikki