From 32c094a09d5829ad9b02cdf667569aefa8de0ea6 Mon Sep 17 00:00:00 2001
From: Srinivas Neeli <srinivas.neeli@xilinx.com>
Date: Thu, 21 Jul 2022 13:09:09 +0530
Subject: [PATCH] gpio: gpio-xilinx: Fix integer overflow
Git-commit: 32c094a09d5829ad9b02cdf667569aefa8de0ea6
Patch-mainline: v5.19-rc8
References: git-fixes
Current implementation is not able to configure more than 32 pins
due to incorrect data type. So type casting with unsigned long
to avoid it.
Fixes: 02b3f84d9080 ("xilinx: Switch to use bitmap APIs")
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpio/gpio-xilinx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index b6d3a57e27ed..7f8e2fed2988 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -99,7 +99,7 @@ static inline void xgpio_set_value32(unsigned long *map, int bit, u32 v)
const unsigned long offset = (bit % BITS_PER_LONG) & BIT(5);
map[index] &= ~(0xFFFFFFFFul << offset);
- map[index] |= v << offset;
+ map[index] |= (unsigned long)v << offset;
}
static inline int xgpio_regoffset(struct xgpio_instance *chip, int ch)
--
2.35.3