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isa: Remove unnecessary checks

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The isa_dev->dev.platform_data is initialized with incoming
parameter isa_driver. After it isa_dev->dev.platform_data is
checked for NULL, but incoming parameter isa_driver is not
NULL since it is dereferenced many times before this check.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Vladislav Efanov <VEfanov@ispras.ru>
Acked-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/20230517125025.434005-1-VEfanov@ispras.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vladislav Efanov 2023-05-17 15:50:25 +03:00 • committed by Greg Kroah-Hartman
parent 54aa5b6044
commit 6bea9ea6bb
1 changed files with 2 additions and 5 deletions
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7
drivers/base/isa.c
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@ -149,11 +149,8 @@ int isa_register_driver(struct isa_driver *isa_driver, unsigned int ndev)
break;
}
if (isa_dev->dev.platform_data) {
isa_dev->next = isa_driver->devices;
isa_driver->devices = &isa_dev->dev;
} else
device_unregister(&isa_dev->dev);
isa_dev->next = isa_driver->devices;
isa_driver->devices = &isa_dev->dev;
}
if (!error && !isa_driver->devices)