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Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr

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The check to free the Hyper-V control table header was reversed. This
fixes it.

Fixes: 81b18bce48 ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")

Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sunil Muthuswamy 2018-07-28 21:58:46 +00:00 committed by Greg Kroah-Hartman
parent ddcaf3ca4c
commit 8afc06dd75
1 changed files with 4 additions and 10 deletions
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14
drivers/hv/vmbus_drv.c
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@ -1176,11 +1176,8 @@ static int vmbus_bus_init(void)
bus_unregister(&hv_bus);
free_page((unsigned long)hv_panic_page);
if (!hv_ctl_table_hdr) {
unregister_sysctl_table(hv_ctl_table_hdr);
hv_ctl_table_hdr = NULL;
}
unregister_sysctl_table(hv_ctl_table_hdr);
hv_ctl_table_hdr = NULL;
return ret;
}
@ -1891,11 +1888,8 @@ static void __exit vmbus_exit(void)
}
free_page((unsigned long)hv_panic_page);
if (!hv_ctl_table_hdr) {
unregister_sysctl_table(hv_ctl_table_hdr);
hv_ctl_table_hdr = NULL;
}
unregister_sysctl_table(hv_ctl_table_hdr);
hv_ctl_table_hdr = NULL;
bus_unregister(&hv_bus);
cpuhp_remove_state(hyperv_cpuhp_online);