linux-kernel - [PATCH] soc: xilinx: Add error message for invalid payload received from IPI callback.

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Message-ID: <85749bde3e71148533d31ea2092f4514ec347768.1701962639.git.michal.simek@amd.com>
Date:   Thu, 7 Dec 2023 16:24:08 +0100
From:   Michal Simek <michal.simek@....com>
To:     <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
        <michal.simek@...inx.com>, <git@...inx.com>
CC:     Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>,
        "Radhey Shyam Pandey" <radhey.shyam.pandey@....com>,
        Rob Herring <robh@...nel.org>,
        "Ruan Jinjie" <ruanjinjie@...wei.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] soc: xilinx: Add error message for invalid payload received from IPI callback.

From: Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>

payload[0] of response buffer of zynqmp_pm_get_callback_data()
contains valid payload or error code in case of error.

Added error message to inform user about the error code received in
payload[0].

Signed-off-by: Naman Trivedi Manojbhai <naman.trivedimanojbhai@....com>
Signed-off-by: Michal Simek <michal.simek@....com>
---

 drivers/soc/xilinx/zynqmp_power.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/xilinx/zynqmp_power.c b/drivers/soc/xilinx/zynqmp_power.c
index abcf7e883279..07d735b38b49 100644
--- a/drivers/soc/xilinx/zynqmp_power.c
+++ b/drivers/soc/xilinx/zynqmp_power.c
@@ -86,6 +86,8 @@ static irqreturn_t zynqmp_pm_isr(int irq, void *data)
 			pr_err("%s Unsupported InitSuspendCb reason code %d\n",
 			       __func__, payload[1]);
 		}
+	} else {
+		pr_err("%s() Unsupported Callback %d\n", __func__, payload[0]);
 	}
 
 	return IRQ_HANDLED;
-- 
2.36.1