linux-kernel - Re: [PATCH 5/5] i2c: geni: sdm845: dont perform DMA for the oneplus6

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Date:   Thu, 8 Oct 2020 12:03:52 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Caleb Connolly <caleb@...nolly.tech>
Cc:     linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Akash Asthana <akashast@...eaurora.org>,
        Mukesh Savaliya <msavaliy@...eaurora.org>,
        ~postmarketos/upstreaming@...ts.sr.ht, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] i2c: geni: sdm845: dont perform DMA for the oneplus6

On Wed, Oct 07, 2020 at 05:49:35PM +0000, Caleb Connolly wrote:
> The OnePlus 6/T has the same issues as the c630 causing a crash when DMA
> is used for i2c, so disable it.
> 
> https://patchwork.kernel.org/patch/11133827/
> Signed-off-by: Caleb Connolly <caleb@...nolly.tech>

May I ask for a quick review here, so we can get this into 5.9 if
qcom-geni maintainers agree this is good to go?

> ---
>  drivers/i2c/busses/i2c-qcom-geni.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
> index dead5db3315a..50a0674a6553 100644
> --- a/drivers/i2c/busses/i2c-qcom-geni.c
> +++ b/drivers/i2c/busses/i2c-qcom-geni.c
> @@ -358,7 +358,8 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg,
>  	struct geni_se *se = &gi2c->se;
>  	size_t len = msg->len;
>  
> -	if (!of_machine_is_compatible("lenovo,yoga-c630"))
> +	if (!of_machine_is_compatible("lenovo,yoga-c630") &&
> +	    !of_machine_is_compatible("oneplus,oneplus6"))
>  		dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
>  
>  	if (dma_buf)
> @@ -400,7 +401,8 @@ static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg,
>  	struct geni_se *se = &gi2c->se;
>  	size_t len = msg->len;
>  
> -	if (!of_machine_is_compatible("lenovo,yoga-c630"))
> +	if (!of_machine_is_compatible("lenovo,yoga-c630") &&
> +	    !of_machine_is_compatible("oneplus,oneplus6"))
>  		dma_buf = i2c_get_dma_safe_msg_buf(msg, 32);
>  
>  	if (dma_buf)
> -- 
> 2.28.0
> 
> 

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