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Date: Wed, 26 Oct 2022 15:15:34 +0200 From: Matthias Schiffer <matthias.schiffer@...tq-group.com> To: Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org> Cc: Marcel Holtmann <marcel@...tmann.org>, Johan Hedberg <johan.hedberg@...il.com>, Luiz Augusto von Dentz <luiz.dentz@...il.com>, Amitkumar Karwar <amitkarwar@...il.com>, Ganapathi Bhat <ganapathi017@...il.com>, Sharvari Harisangam <sharvari.harisangam@....com>, Xinming Hu <huxinming820@...il.com>, Kalle Valo <kvalo@...nel.org>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, devicetree@...r.kernel.org, linux@...tq-group.com, Matthias Schiffer <matthias.schiffer@...tq-group.com> Subject: [RFC 5/5] bluetooth: hci_mrvl: allow waiting for firmware load using notify-device Signed-off-by: Matthias Schiffer <matthias.schiffer@...tq-group.com> --- drivers/bluetooth/hci_mrvl.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/bluetooth/hci_mrvl.c b/drivers/bluetooth/hci_mrvl.c index b7d764e6010f..dc55053574a9 100644 --- a/drivers/bluetooth/hci_mrvl.c +++ b/drivers/bluetooth/hci_mrvl.c @@ -12,6 +12,7 @@ #include <linux/skbuff.h> #include <linux/firmware.h> #include <linux/module.h> +#include <linux/notify-device.h> #include <linux/tty.h> #include <linux/of.h> #include <linux/of_device.h> @@ -433,9 +434,25 @@ static int mrvl_serdev_probe(struct serdev_device *serdev) return -ENOMEM; if (IS_ENABLED(CONFIG_OF)) { + struct device_node *firmware_ready_node; + struct device *firmware_ready; + mrvldev->info = of_device_get_match_data(&serdev->dev); if (!mrvldev->info) return -ENODEV; + + firmware_ready_node = of_parse_phandle(serdev->dev.of_node, + "firmware-ready", 0); + if (firmware_ready_node) { + firmware_ready = + notify_device_find_by_of_node(firmware_ready_node); + if (!firmware_ready) + return -EPROBE_DEFER; + if (IS_ERR(firmware_ready)) + return PTR_ERR(firmware_ready); + put_device(firmware_ready); + } + } mrvldev->hu.serdev = serdev; -- 2.25.1
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