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gpio: gpio-xilinx: Check return value of of_property_read_u32

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In two different instances the return value of "of_property_read_u32"
API was neither captured nor checked.
Fixed it by capturing the return value and then checking for any error.

Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Addresses-Coverity: "check_return"
Link: https://lore.kernel.org/r/1605201148-4508-9-git-send-email-srinivas.neeli@xilinx.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Srinivas Neeli 2020-11-12 22:42:27 +05:30 committed by Linus Walleij
parent 0230a41ed6
commit bea67aeab0
1 changed files with 5 additions and 3 deletions
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8
drivers/gpio/gpio-xilinx.c
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@ -298,7 +298,8 @@ static int xgpio_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, chip);
/* Update GPIO state shadow register with default value */
of_property_read_u32(np, "xlnx,dout-default", &chip->gpio_state[0]);
if (of_property_read_u32(np, "xlnx,dout-default", &chip->gpio_state[0]))
chip->gpio_state[0] = 0x0;
/* Update GPIO direction shadow register with default value */
if (of_property_read_u32(np, "xlnx,tri-default", &chip->gpio_dir[0]))
@ -318,8 +319,9 @@ static int xgpio_probe(struct platform_device *pdev)
if (is_dual) {
/* Update GPIO state shadow register with default value */
of_property_read_u32(np, "xlnx,dout-default-2",
&chip->gpio_state[1]);
if (of_property_read_u32(np, "xlnx,dout-default-2",
&chip->gpio_state[1]))
chip->gpio_state[1] = 0x0;
/* Update GPIO direction shadow register with default value */
if (of_property_read_u32(np, "xlnx,tri-default-2",