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| author | Andy Shevchenko <[email protected]> | 2021-03-22 16:31:00 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2021-03-22 16:45:53 +0000 |
| commit | eb50aaf960e3bedfef79063411ffd670da94b84b (patch) | |
| tree | 50d4df51a5033cfb2832c29ebb7c342ffce85190 /drivers/usb/cdns3/core.c | |
| parent | Linux 5.12-rc4 (diff) | |
| download | kernel-eb50aaf960e3bedfef79063411ffd670da94b84b.tar.gz kernel-eb50aaf960e3bedfef79063411ffd670da94b84b.zip | |
ACPI: scan: Use unique number for instance_no
The decrementation of acpi_device_bus_id->instance_no
in acpi_device_del() is incorrect, because it may cause
a duplicate instance number to be allocated next time
a device with the same acpi_device_bus_id is added.
Replace above mentioned approach by using IDA framework.
While at it, define the instance range to be [0, 4096).
Fixes: e49bd2dd5a50 ("ACPI: use PNPID:instance_no as bus_id of ACPI device")
Fixes: ca9dc8d42b30 ("ACPI / scan: Fix acpi_bus_id_list bookkeeping")
Signed-off-by: Andy Shevchenko <[email protected]>
Cc: 4.10+ <[email protected]> # 4.10+
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/core.c')
0 files changed, 0 insertions, 0 deletions