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nvme: use NVME_GONE rather than hard-coded 0xffffffff

Description

nvme: use NVME_GONE rather than hard-coded 0xffffffff

Make it clearer that the value 0xfffffff is being used to detect the device is
gone. We use it other places in the driver for other meanings.

(cherry picked from commit 9600aa31aa633bbb9e8a56d91a781d5a7ce2bff6)

Details

Provenance
impAuthored on Feb 8 2021, 8:08 PM
Parents
rGb8b867a10f56: efibootmgr: Check for efi supported after parsing args
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