linux-kernel - [PATCH] USB: OHCI/UHCI: Add soft dependencies on ehci

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Message-ID: <20251230080014.3934590-1-chenhuacai@loongson.cn>
Date: Tue, 30 Dec 2025 16:00:14 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Alan Stern <stern@...land.harvard.edu>,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Huacai Chen <chenhuacai@...ngson.cn>,
	stable@...r.kernel.org,
	Shengwen Xiao <atzlinux@...a.com>
Subject: [PATCH] USB: OHCI/UHCI: Add soft dependencies on ehci_hcd

Commit 9beeee6584b9aa4f ("USB: EHCI: log a warning if ehci-hcd is not
loaded first") said that ehci-hcd should be loaded before ohci-hcd and
uhci-hcd. However, commit 05c92da0c52494ca ("usb: ohci/uhci - add soft
dependencies on ehci_pci") only makes ohci-pci/uhci-pci depend on ehci-
pci, which is not enough and we may still see the warnings in boot log.
So fix it by also making ohci-hcd/uhci-hcd depend on ehci-hcd.

Cc: stable@...r.kernel.org
Reported-by: Shengwen Xiao <atzlinux@...a.com>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 drivers/usb/host/ohci-hcd.c | 1 +
 drivers/usb/host/uhci-hcd.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 9c7f3008646e..549c965b7fbe 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1355,4 +1355,5 @@ static void __exit ohci_hcd_mod_exit(void)
 	clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
 }
 module_exit(ohci_hcd_mod_exit);
+MODULE_SOFTDEP("pre: ehci_hcd");
 
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 14e6dfef16c6..e1a27d01bdbc 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -939,3 +939,4 @@ module_exit(uhci_hcd_cleanup);
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: ehci_hcd");
-- 
2.47.3