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| author | Richard Spiegel <richard.spiegel@amd.corp-partner.google.com> | 2018-08-20 16:59:02 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-08-28 15:36:51 +0000 |
| commit | 4cafc886195a52a0610c46c79fbb700294e9f1aa (patch) | |
| tree | 8d9b02066ff2b059bf261493b81511d31c1960eb /src/lib | |
| parent | 78f2343aa2d4fb606423cba4251252e033f41c6c (diff) | |
| download | coreboot-4cafc886195a52a0610c46c79fbb700294e9f1aa.tar.xz | |
lib/gpio.c: Validate num_gpio
In function _gpio_base3_value(), if num_gpio is 0 it'll cause the return
of an undefined value, as no for loop will be executed. Assert that it's
not 0.
BUG=b:112253891
TEST=Build and boot grunt.
Change-Id: I2b6537900fa41ebbee0171959f3ce236d360bc80
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/28249
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/gpio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/lib/gpio.c b/src/lib/gpio.c index 0656dfb870..da748492fc 100644 --- a/src/lib/gpio.c +++ b/src/lib/gpio.c @@ -82,7 +82,8 @@ uint32_t _gpio_base3_value(const gpio_t gpio[], int num_gpio, int binary_first) int index; int temp; char value[32]; - assert(num_gpio <= 32); + if ((num_gpio > 32) && (num_gpio < 1)) + die("gpio_base3_value: Invalid number of GPIOs"); /* Enable internal pull up */ for (index = 0; index < num_gpio; ++index) |