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| author |   Zhen Lei <thunder.leizhen@huawei.com> | 2021-05-28 16:26:14 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-04 15:27:26 +0200 |
| commit | ce52ec5beecc1079c251f60e3973b3758f60eb59 (patch) | |
| tree | 14ef3e9cfdc2296b3a6d2049eb856876f5bc188f /drivers/visorbus | |
| parent | char: xillybus: Fix spelling mistake "overflew" -> "overflowed" (diff) | |
| download | wireguard-linux-ce52ec5beecc1079c251f60e3973b3758f60eb59.tar.xz wireguard-linux-ce52ec5beecc1079c251f60e3973b3758f60eb59.zip | |
visorbus: fix error return code in visorchipset_init()
Commit 1366a3db3dcf ("staging: unisys: visorbus: visorchipset_init clean
up gotos") assigns the initial value -ENODEV to the local variable 'err',
and the first several error branches will return this value after "goto
error". But commit f1f537c2e7f5 ("staging: unisys: visorbus: Consolidate
controlvm channel creation.") overwrites 'err' in the middle of the way.
As a result, some error branches do not successfully return the initial
value -ENODEV of 'err', but return 0.
In addition, when kzalloc() fails, -ENOMEM should be returned instead of
-ENODEV.
Fixes: f1f537c2e7f5 ("staging: unisys: visorbus: Consolidate controlvm channel creation.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210528082614.9337-1-thunder.leizhen@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/visorbus')
| -rw-r--r-- | drivers/visorbus/visorchipset.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/visorbus/visorchipset.c b/drivers/visorbus/visorchipset.c index cb1eb7e05f87..5668cad86e37 100644 --- a/drivers/visorbus/visorchipset.c +++ b/drivers/visorbus/visorchipset.c @@ -1561,7 +1561,7 @@ schedule_out: static int visorchipset_init(struct acpi_device *acpi_device) { - int err = -ENODEV; + int err = -ENOMEM; struct visorchannel *controlvm_channel; chipset_dev = kzalloc(sizeof(*chipset_dev), GFP_KERNEL); @@ -1584,8 +1584,10 @@ static int visorchipset_init(struct acpi_device *acpi_device) "controlvm", sizeof(struct visor_controlvm_channel), VISOR_CONTROLVM_CHANNEL_VERSIONID, - VISOR_CHANNEL_SIGNATURE)) + VISOR_CHANNEL_SIGNATURE)) { + err = -ENODEV; goto error_delete_groups; + } /* if booting in a crash kernel */ if (is_kdump_kernel()) INIT_DELAYED_WORK(&chipset_dev->periodic_controlvm_work, |