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Message-ID: <1e02f4f8-ebd3-4f57-98a9-48d7e08c0ad4@linaro.org>
Date: Thu, 23 Nov 2023 12:55:38 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Suraj Jaiswal <quic_jsuraj@...cinc.com>, Vinod Koul <vkoul@...nel.org>,
Bhupesh Sharma <bhupesh.sharma@...aro.org>, Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>, "David S. Miller"
<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>, netdev@...r.kernel.org,
linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
Prasad Sodagudi <psodagud@...cinc.com>, Andrew Halaney <ahalaney@...hat.com>
Cc: kernel@...cinc.com
Subject: Re: [PATCH net-next v3 3/3] net: stmmac: Add driver support for
DWMAC5 fault IRQ Support
On 11/23/23 12:38, Suraj Jaiswal wrote:
> Add IRQ support to listen HW fault like ECC,DPP,FSM
> fault and print the fault information in the kernel
> log.
>
> Signed-off-by: Suraj Jaiswal <quic_jsuraj@...cinc.com>
> ---
> drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
> drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 ++
> .../net/ethernet/stmicro/stmmac/stmmac_main.c | 18 +++++++++++++++++
> .../ethernet/stmicro/stmmac/stmmac_platform.c | 20 +++++++++++++++++++
> 4 files changed, 41 insertions(+)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 6b935922054d..c4821c7ab674 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -347,6 +347,7 @@ enum request_irq_err {
> REQ_IRQ_ERR_SFTY_UE,
> REQ_IRQ_ERR_SFTY_CE,
> REQ_IRQ_ERR_LPI,
> + REQ_IRQ_ERR_SAFETY,
> REQ_IRQ_ERR_WOL,
> REQ_IRQ_ERR_MAC,
> REQ_IRQ_ERR_NO,
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> index cd7a9768de5f..8893d4b7fa38 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> @@ -33,6 +33,7 @@ struct stmmac_resources {
> int irq;
> int sfty_ce_irq;
> int sfty_ue_irq;
> + int safety_common_intr;
> int rx_irq[MTL_MAX_RX_QUEUES];
> int tx_irq[MTL_MAX_TX_QUEUES];
> };
> @@ -331,6 +332,7 @@ struct stmmac_priv {
> /* XDP BPF Program */
> unsigned long *af_xdp_zc_qps;
> struct bpf_prog *xdp_prog;
> + int safety_common_intr;
other interrupts use _irq yet you seem to use _intr, plus the
aforementioned "safety" vs "fault" naming
[...]
>
> +int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
> +{
> + int ret = 0;
get rid of ret and return directly
> +
> + res->safety_common_intr = platform_get_irq_byname(pdev, "safety");
> +
stray newline?
> + if (res->safety_common_intr < 0) {
> + if (res->safety_common_intr != -EPROBE_DEFER)
> + dev_err(&pdev->dev, "safety IRQ configuration information not found\n");
> + ret = 1;
> + }
> +
> + return ret;
> +}
> +
> int stmmac_get_platform_resources(struct platform_device *pdev,
> struct stmmac_resources *stmmac_res)
> {
> + int ret = 0;
Missing newline between declarations and code
Unnecessary initialization
> memset(stmmac_res, 0, sizeof(*stmmac_res));
>
> /* Get IRQ information early to have an ability to ask for deferred
> @@ -702,6 +718,10 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
> if (stmmac_res->irq < 0)
> return stmmac_res->irq;
>
> + ret = stmmac_get_fault_intr_config(pdev, stmmac_res);
> + if (ret)
> + dev_err(&pdev->dev, "Fault interrupt not present\n");
Since you're getting the return value, perhaps the errno should
be propagated
Konrad
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