From: Srinivas Neeli <srinivas.neeli@xilinx.com>
To: <linus.walleij@linaro.org>, <bgolaszewski@baylibre.com>,
<michal.simek@xilinx.com>, <shubhrajyoti.datta@xilinx.com>,
<sgoud@xilinx.com>, <hancock@sedsystems.ca>,
<vilhelm.gray@gmail.com>, <syednwaris@gmail.com>
Cc: <linux-gpio@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <git@xilinx.com>,
Srinivas Neeli <srinivas.neeli@xilinx.com>
Subject: [PATCH V4 5/5] gpio: gpio-xilinx: Add check if width exceeds 32
Date: Wed, 6 Jan 2021 17:56:40 +0530 [thread overview]
Message-ID: <1609936000-28378-6-git-send-email-srinivas.neeli@xilinx.com> (raw)
In-Reply-To: <1609936000-28378-1-git-send-email-srinivas.neeli@xilinx.com>
Add check to see if gpio-width property does not exceed 32.
If it exceeds then return -EINVAL.
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
---
Changes in V4:
-New patch.
---
drivers/gpio/gpio-xilinx.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index e47ae08167f8..ddec718e114c 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -591,6 +591,9 @@ static int xgpio_probe(struct platform_device *pdev)
if (of_property_read_u32(np, "xlnx,gpio-width", &chip->gpio_width[0]))
chip->gpio_width[0] = 32;
+ if (chip->gpio_width[0] > 32)
+ return -EINVAL;
+
spin_lock_init(&chip->gpio_lock);
if (of_property_read_u32(np, "xlnx,is-dual", &is_dual))
@@ -615,6 +618,8 @@ static int xgpio_probe(struct platform_device *pdev)
&chip->gpio_width[1]))
chip->gpio_width[1] = 32;
+ if (chip->gpio_width[1] > 32)
+ return -EINVAL;
}
chip->gc.base = -1;
--
2.7.4
next prev parent reply other threads:[~2021-01-06 12:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 12:26 [PATCH V4 0/5] gpio-xilinx: Update on xilinx gpio driver Srinivas Neeli
2021-01-06 12:26 ` [PATCH V4 1/5] gpio: gpio-xilinx: Simplify with dev_err_probe() Srinivas Neeli
2021-01-07 9:13 ` Linus Walleij
2021-01-06 12:26 ` [PATCH V4 2/5] gpio: gpio-xilinx: Reduce spinlock array to array Srinivas Neeli
2021-01-07 9:14 ` Linus Walleij
2021-01-06 12:26 ` [PATCH V4 3/5] gpio: gpio-xilinx: Add interrupt support Srinivas Neeli
2021-01-07 9:26 ` Linus Walleij
2021-01-06 12:26 ` [PATCH V4 4/5] gpio: gpio-xilinx: Add support for suspend and resume Srinivas Neeli
2021-01-07 9:46 ` Linus Walleij
2021-01-08 11:41 ` Srinivas Neeli
2021-01-09 0:25 ` Linus Walleij
2021-01-06 12:26 ` Srinivas Neeli [this message]
2021-01-07 10:17 ` [PATCH V4 5/5] gpio: gpio-xilinx: Add check if width exceeds 32 Linus Walleij
2021-01-07 10:29 ` Michal Simek
2021-01-07 10:47 ` Linus Walleij
2021-01-07 10:52 ` Michal Simek
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