linux-kernel - [PATCH] mailbox: qcom-apcs-ipc: use PLATFORM_DEVID

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Date:   Tue, 13 Oct 2020 10:12:41 +0800
From:   Shawn Guo <shawn.guo@...aro.org>
To:     Jassi Brar <jassisinghbrar@...il.com>,
        Andy Gross <agross@...nel.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Konrad Dybcio <konradybcio@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH] mailbox: qcom-apcs-ipc: use PLATFORM_DEVID_AUTO to register device

On MSM8916, only one qcom-apcs-msm8916-clk device is needed, as there is
only one APCS clock.  However, on MSM8939 three APCS clocks need to be
registered for cluster0 (little cores), cluster1 (big cores) and CCI
(Cache Coherent Interconnect).  That said, we will need to register 3
qcom-apcs-msm8916-clk devices.  Let's use PLATFORM_DEVID_AUTO rather
than PLATFORM_DEVID_NONE for platform_device_register_data() call.
Otherwise, the second APCS clock registration will fail due to duplicate
device name.

[    0.519657] sysfs: cannot create duplicate filename '/bus/platform/devices/qcom-apcs-msm8916-clk'
...
[    0.661158] qcom_apcs_ipc b111000.mailbox: failed to register APCS clk

Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
---
 drivers/mailbox/qcom-apcs-ipc-mailbox.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
index 077e5c6a9ef7..3d100a004760 100644
--- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
+++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
@@ -128,7 +128,7 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
 	if (apcs_data->clk_name) {
 		apcs->clk = platform_device_register_data(&pdev->dev,
 							  apcs_data->clk_name,
-							  PLATFORM_DEVID_NONE,
+							  PLATFORM_DEVID_AUTO,
 							  NULL, 0);
 		if (IS_ERR(apcs->clk))
 			dev_err(&pdev->dev, "failed to register APCS clk\n");
-- 
2.17.1