From: Colin Ian King colin.king@canonical.com
[ Upstream commit 0707cfa5c3ef58effb143db9db6d6e20503f9dec ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/base/platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 1d3a50ac21664..d1f901b58f755 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -427,7 +427,7 @@ 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);