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| author |   Colin Ian King <colin.king@canonical.com> | 2020-01-16 17:57:58 +0000 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-22 15:27:11 +0100 |
| commit | 0707cfa5c3ef58effb143db9db6d6e20503f9dec (patch) | |
| tree | f041064a7ada317cc4a11f7b4d3efeeaca6ebf13 /drivers/base/platform.c | |
| parent | cpu-topology: Don't error on more than CONFIG_NR_CPUS CPUs in device tree (diff) | |
| download | linux-dev-0707cfa5c3ef58effb143db9db6d6e20503f9dec.tar.xz linux-dev-0707cfa5c3ef58effb143db9db6d6e20503f9dec.zip | |
driver core: platform: fix u32 greater or equal to zero comparison
Currently the check that a u32 variable i is >= 0 is always true because
the unsigned variable will never be negative, causing the loop to run
forever. Fix this by changing the pre-decrement check to a zero check on
i followed by a decrement of i.
Addresses-Coverity: ("Unsigned compared against 0")
Fixes: 39cc539f90d0 ("driver core: platform: Prevent resouce overflow from causing infinite loops")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20200116175758.88396-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/platform.c')
| -rw-r--r-- | drivers/base/platform.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 864b53b3d598..7fa654f1288b 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -571,7 +571,7 @@ int platform_device_add(struct platform_device *pdev) pdev->id = PLATFORM_DEVID_AUTO; } - while (--i >= 0) { + while (i--) { struct resource *r = &pdev->resource[i]; if (r->parent) release_resource(r); |