Kingfisher: BT: use proper way to get shutdown gpio

1 files changed, 61 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0067-ti-st-use-proper-way-to-get-shutdown-gpio.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0067-ti-st-use-proper-way-to-get-shutdown-gpio.patch
new file mode 100644
index 0000000..4d99054
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0067-ti-st-use-proper-way-to-get-shutdown-gpio.patch
@@ -0,0 +1,61 @@
+From 36a9b5317c58a1cdcb8a6fa05416efd524480fbe Mon Sep 17 00:00:00 2001
+From: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+Date: Wed, 2 Aug 2017 17:39:56 +0300
+Subject: [PATCH] ti-st: use proper way to get shutdown gpio
+
+Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
+---
+ drivers/misc/ti-st/st_kim.c | 23 ++++++++++++++++++-----
+ 1 file changed, 18 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
+index cb2734568471..03b21d314b0b 100644
+--- a/drivers/misc/ti-st/st_kim.c
++++ b/drivers/misc/ti-st/st_kim.c
+@@ -32,6 +32,8 @@
+ #include <linux/sched.h>
+ #include <linux/sysfs.h>
+ #include <linux/tty.h>
++#include <linux/of_device.h>
++#include <linux/of_gpio.h>
+ 
+ #include <linux/skbuff.h>
+ #include <linux/ti_wilink_st.h>
+@@ -749,18 +751,29 @@ static struct ti_st_plat_data *get_platform_data(struct device *dev)
+ 
+ 	dt_pdata = kzalloc(sizeof(*dt_pdata), GFP_KERNEL);
+ 
+-	if (!dt_pdata)
++	if (!dt_pdata) {
+ 		pr_err("Can't allocate device_tree platform data\n");
++		return NULL;
++	}
+ 
+ 	dt_property = of_get_property(np, "dev_name", &len);
+-	if (dt_property)
+-		memcpy(&dt_pdata->dev_name, dt_property, len);
+-	of_property_read_u32(np, "nshutdown_gpio",
+-			     (u32 *)&dt_pdata->nshutdown_gpio);
++	if (!dt_property) {
++		dev_err(dev, "failed to get tty name\n");
++		goto err;
++	}
++	memcpy(&dt_pdata->dev_name, dt_property, len);
++	dt_pdata->nshutdown_gpio = of_get_named_gpio(np, "shutdown-gpios", 0);
++	if (!gpio_is_valid(dt_pdata->nshutdown_gpio)) {
++		dev_err(dev, "failed to get shutdown gpio\n");
++		goto err;
++	}
+ 	of_property_read_u32(np, "flow_cntrl", (u32 *)&dt_pdata->flow_cntrl);
+ 	of_property_read_u32(np, "baud_rate", (u32 *)&dt_pdata->baud_rate);
+ 
+ 	return dt_pdata;
++err:
++	kfree(dt_pdata);
++	return NULL;
+ }
+ 
+ static struct dentry *kim_debugfs_dir;
+-- 
+2.13.0
+