All of lore.kernel.org
 help / color / mirror / Atom feed
From: Syed Nayyar Waris <syednwaris@gmail.com>
To: linus.walleij@linaro.org
Cc: andriy.shevchenko@linux.intel.com, vilhelm.gray@gmail.com,
	michal.simek@xilinx.com, arnd@arndb.de, rrichter@marvell.com,
	linus.walleij@linaro.org, bgolaszewski@baylibre.com,
	yamada.masahiro@socionext.com, akpm@linux-foundation.org,
	rui.zhang@intel.com, daniel.lezcano@linaro.org,
	amit.kucheria@verdurent.com, linux-arch@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org
Subject: [PATCH 5/5] gpio: xilinx: Add extra check if sum of widths exceed 64
Date: Sat, 26 Dec 2020 12:15:20 +0530	[thread overview]
Message-ID: <fd642c0843d59a0091931fcf9baa19a9dbb6e2e7.1608963095.git.syednwaris@gmail.com> (raw)
In-Reply-To: <cover.1608963094.git.syednwaris@gmail.com>

Add extra check to see if sum of widths does not exceed 64. If it
exceeds then return -EINVAL alongwith appropriate error message.

Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Syed Nayyar Waris <syednwaris@gmail.com>
---
 drivers/gpio/gpio-xilinx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index d565fbf128b7..c9d740ac711b 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -319,6 +319,12 @@ static int xgpio_probe(struct platform_device *pdev)
 
 	chip->gc.base = -1;
 	chip->gc.ngpio = chip->gpio_width[0] + chip->gpio_width[1];
+
+	if (chip->gc.ngpio > 64) {
+		dev_err(&pdev->dev, "invalid configuration: number of GPIO is greater than 64");
+			return -EINVAL;
+	}
+
 	chip->gc.parent = &pdev->dev;
 	chip->gc.direction_input = xgpio_dir_in;
 	chip->gc.direction_output = xgpio_dir_out;
-- 
2.29.0


WARNING: multiple messages have this Message-ID (diff)
From: Syed Nayyar Waris <syednwaris@gmail.com>
To: linus.walleij@linaro.org
Cc: linux-arch@vger.kernel.org, amit.kucheria@verdurent.com,
	arnd@arndb.de, yamada.masahiro@socionext.com,
	linux-kernel@vger.kernel.org, linus.walleij@linaro.org,
	daniel.lezcano@linaro.org, vilhelm.gray@gmail.com,
	michal.simek@xilinx.com, bgolaszewski@baylibre.com,
	rrichter@marvell.com, linux-gpio@vger.kernel.org,
	linux-pm@vger.kernel.org, akpm@linux-foundation.org,
	andriy.shevchenko@linux.intel.com, rui.zhang@intel.com,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] gpio: xilinx: Add extra check if sum of widths exceed 64
Date: Sat, 26 Dec 2020 12:15:20 +0530	[thread overview]
Message-ID: <fd642c0843d59a0091931fcf9baa19a9dbb6e2e7.1608963095.git.syednwaris@gmail.com> (raw)
In-Reply-To: <cover.1608963094.git.syednwaris@gmail.com>

Add extra check to see if sum of widths does not exceed 64. If it
exceeds then return -EINVAL alongwith appropriate error message.

Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Syed Nayyar Waris <syednwaris@gmail.com>
---
 drivers/gpio/gpio-xilinx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index d565fbf128b7..c9d740ac711b 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -319,6 +319,12 @@ static int xgpio_probe(struct platform_device *pdev)
 
 	chip->gc.base = -1;
 	chip->gc.ngpio = chip->gpio_width[0] + chip->gpio_width[1];
+
+	if (chip->gc.ngpio > 64) {
+		dev_err(&pdev->dev, "invalid configuration: number of GPIO is greater than 64");
+			return -EINVAL;
+	}
+
 	chip->gc.parent = &pdev->dev;
 	chip->gc.direction_input = xgpio_dir_in;
 	chip->gc.direction_output = xgpio_dir_out;
-- 
2.29.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-12-26  6:46 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-26  6:41 [PATCH 0/5] Introduce the for_each_set_clump macro Syed Nayyar Waris
2020-12-26  6:41 ` Syed Nayyar Waris
2020-12-26  6:42 ` [PATCH 1/5] clump_bits: " Syed Nayyar Waris
2020-12-26  6:42   ` Syed Nayyar Waris
2020-12-27 22:03   ` Arnd Bergmann
2020-12-27 22:03     ` Arnd Bergmann
2020-12-28 12:10     ` William Breathitt Gray
2020-12-28 12:10       ` William Breathitt Gray
2020-12-26  6:43 ` [PATCH 2/5] lib/test_bitmap.c: Add for_each_set_clump test cases Syed Nayyar Waris
2020-12-26  6:43   ` Syed Nayyar Waris
2020-12-26 14:43   ` kernel test robot
2020-12-26 14:48   ` kernel test robot
2020-12-26 15:03   ` kernel test robot
     [not found]   ` <CAHp75VcSsfDKY3w4ufZktXzRB=GiObAV6voPfmeAHcbdwX0uqg@mail.gmail.com>
2021-02-04  8:55     ` Syed Nayyar Waris
2021-02-04  8:55       ` Syed Nayyar Waris
2021-02-07  4:18       ` Syed Nayyar Waris
2021-02-07  4:18         ` Syed Nayyar Waris
2020-12-26  6:43 ` [PATCH 3/5] gpio: thunderx: Utilize for_each_set_clump macro Syed Nayyar Waris
2020-12-26  6:43   ` Syed Nayyar Waris
2020-12-26 16:26   ` kernel test robot
2020-12-26 20:18   ` kernel test robot
2020-12-26  6:44 ` [PATCH 4/5] gpio: xilinx: Utilize generic bitmap_get_value and _set_value Syed Nayyar Waris
2020-12-26  6:44   ` Syed Nayyar Waris
2020-12-27 21:29   ` Linus Walleij
2020-12-27 21:29     ` Linus Walleij
2021-01-05 11:04     ` Michal Simek
2021-01-05 11:04       ` Michal Simek
2020-12-29  0:50   ` kernel test robot
2020-12-29  0:50   ` kernel test robot
2020-12-26  6:45 ` Syed Nayyar Waris [this message]
2020-12-26  6:45   ` [PATCH 5/5] gpio: xilinx: Add extra check if sum of widths exceed 64 Syed Nayyar Waris
2020-12-26  8:31   ` kernel test robot
2020-12-28 11:58   ` William Breathitt Gray
2020-12-28 11:58     ` William Breathitt Gray
2021-01-05 11:01   ` Michal Simek
2021-01-05 11:01     ` Michal Simek
2020-12-27 21:26 ` [PATCH 0/5] Introduce the for_each_set_clump macro Linus Walleij
2020-12-27 21:26   ` Linus Walleij
2021-01-05 14:19   ` Bartosz Golaszewski
2021-01-05 14:19     ` Bartosz Golaszewski
2021-01-05 14:39     ` Andy Shevchenko
2021-01-05 14:39       ` Andy Shevchenko
2021-01-06  7:27       ` Bartosz Golaszewski
2021-01-06  7:27         ` Bartosz Golaszewski
2021-01-06  8:19         ` William Breathitt Gray
2021-01-06  8:19           ` William Breathitt Gray
2021-01-05 11:09 ` Michal Simek
2021-01-05 11:09   ` Michal Simek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=fd642c0843d59a0091931fcf9baa19a9dbb6e2e7.1608963095.git.syednwaris@gmail.com \
    --to=syednwaris@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=amit.kucheria@verdurent.com \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=arnd@arndb.de \
    --cc=bgolaszewski@baylibre.com \
    --cc=daniel.lezcano@linaro.org \
    --cc=linus.walleij@linaro.org \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=michal.simek@xilinx.com \
    --cc=rrichter@marvell.com \
    --cc=rui.zhang@intel.com \
    --cc=vilhelm.gray@gmail.com \
    --cc=yamada.masahiro@socionext.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.