From: Stephen Boyd <swboyd@chromium.org>
Date: Fri, 23 Mar 2018 16:34:51 +0000 (-0700)
Subject: gpiolib: Change bitmap allocation to kmalloc_array
X-Git-Tag: v4.17-rc1~121^2~4^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ace56935ff48879239d79129c7882ea2ff1b4804;p=thirdparty%2Flinux.git

gpiolib: Change bitmap allocation to kmalloc_array

We don't need to clear out these bits when we set them immediately
after. Use kmalloc_array() to skip clearing the bits.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cc0e1519da459..db3788d17ba0e 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -341,7 +341,7 @@ static unsigned long *gpiochip_allocate_mask(struct gpio_chip *chip)
 {
 	unsigned long *p;
 
-	p = kcalloc(BITS_TO_LONGS(chip->ngpio), sizeof(long), GFP_KERNEL);
+	p = kmalloc_array(BITS_TO_LONGS(chip->ngpio), sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return NULL;