The patch below was submitted to be applied to the 5.4-stable tree.
I fail to see how this patch meets the stable kernel rules as found at
Documentation/process/stable-kernel-rules.rst.
I could be totally wrong, and if so, please respond to
<stable@xxxxxxxxxxxxxxx> and let me know why this patch should be
applied. Otherwise, it is now dropped from my patch queues, never to be
seen again.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 9b8d7072d6552ee5c57e5765f211f267041f9557 Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx>
Date: Thu, 7 Nov 2019 11:30:35 +0100
Subject: [PATCH] net: wireless: ti: wl1251 add device tree support
We will have the wl1251 defined as a child node of the mmc interface
and can read setup for gpios, interrupts and the ti,use-eeprom
property from there instead of pdata to be provided by pdata-quirks.
Fixes: 81eef6ca9201 ("mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel")
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Acked-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.7+
[Ulf: Fixed up some complaints from checkpatch]
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
index 677f1146ccf0..f1224b948f83 100644
--- a/drivers/net/wireless/ti/wl1251/sdio.c
+++ b/drivers/net/wireless/ti/wl1251/sdio.c
@@ -16,6 +16,9 @@
#include <linux/irq.h>
#include <linux/pm_runtime.h>
#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
#include "wl1251.h"
@@ -217,6 +220,7 @@ static int wl1251_sdio_probe(struct sdio_func *func,
struct ieee80211_hw *hw;
struct wl1251_sdio *wl_sdio;
const struct wl1251_platform_data *wl1251_board_data;
+ struct device_node *np = func->dev.of_node;
hw = wl1251_alloc_hw();
if (IS_ERR(hw))
@@ -248,6 +252,17 @@ static int wl1251_sdio_probe(struct sdio_func *func,
wl->power_gpio = wl1251_board_data->power_gpio;
wl->irq = wl1251_board_data->irq;
wl->use_eeprom = wl1251_board_data->use_eeprom;
+ } else if (np) {
+ wl->use_eeprom = of_property_read_bool(np,
+ "ti,wl1251-has-eeprom");
+ wl->power_gpio = of_get_named_gpio(np, "ti,power-gpio", 0);
+ wl->irq = of_irq_get(np, 0);
+
+ if (wl->power_gpio == -EPROBE_DEFER ||
+ wl->irq == -EPROBE_DEFER) {
+ ret = -EPROBE_DEFER;
+ goto disable;
+ }
}
if (gpio_is_valid(wl->power_gpio)) {
