From dda8e14363f4f2bac0a1122322a35f47b5565d46 Mon Sep 17 00:00:00 2001
From: Bartosz Golaszewski <brgl@bgdev.pl>
Date: Thu, 20 Jan 2022 20:49:48 +0100
Subject: [PATCH] gpio: sim: check the label length when setting up device
properties
If the user-space sets the chip label to an empty string - we should
check the length and not override the default name or else line hogs
will not be properly attached.
Fixes: cb8c474e79be ("gpio: sim: new testing module")
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
---
drivers/gpio/gpio-sim.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
index 838bbfed11d35..04b137eca8daa 100644
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -816,7 +816,7 @@ gpio_sim_make_bank_swnode(struct gpio_sim_bank *bank,
properties[prop_idx++] = PROPERTY_ENTRY_U32("ngpios", bank->num_lines);
- if (bank->label)
+ if (bank->label && (strlen(bank->label) > 0))
properties[prop_idx++] = PROPERTY_ENTRY_STRING("gpio-sim,label",
bank->label);
--
2.30.2