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Thu, 07 May 2026 08:47:30 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:cc9e:4908:2ae1:f0fd]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e52f5c1cfsm88389555e9.0.2026.05.07.08.47.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 May 2026 08:47:30 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Geert Uytterhoeven , Yoshihiro Shimoda , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [RFC PATCH] usb: host: Default CONFIG_USB_XHCI_RCAR to module Date: Thu, 7 May 2026 16:47:10 +0100 Message-ID: <20260507154710.3903732-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Lad Prabhakar On R-Car Gen3 and RZ/G2HMNE SoCs, when CONFIG_USB_XHCI_RCAR is built-in and the system boots with an NFS root filesystem, the xHCI controller probes before firmware becomes available. As a result, the firmware request fails: xhci-renesas-hcd ee000000.usb: Direct firmware load for r8a779x_usb3_v3.dlmem failed with error -2 Default CONFIG_USB_XHCI_RCAR to module on ARCH_RENESAS so that probing is deferred until after the root filesystem is mounted, ensuring that the firmware is accessible. Configurations explicitly selecting CONFIG_USB_XHCI_RCAR=3Dy are unaffected. Signed-off-by: Lad Prabhakar --- drivers/usb/host/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 0a277a07cf70..b70e019cc3ac 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -90,7 +90,7 @@ config USB_XHCI_RCAR tristate "xHCI support for Renesas R-Car SoCs" depends on USB_XHCI_PLATFORM depends on ARCH_RENESAS || COMPILE_TEST - default ARCH_RENESAS + default m if ARCH_RENESAS help Say 'Y' to enable the support for the xHCI host controller found in Renesas R-Car and RZ/G3E alike ARM SoCs. --=20 2.54.0