Commit 57208632 authored by Michael Kelley's avatar Michael Kelley Committed by Greg Kroah-Hartman

Drivers: hv: vmbus: Cleanup synic memory free path

clk_evt memory is not being freed when the synic is shutdown
or when there is an allocation error.  Add the appropriate
kfree() call, along with a comment to clarify how the memory
gets freed after an allocation error.  Make the free path
consistent by removing checks for NULL since kfree() and
free_page() already do the check.
Signed-off-by: default avatarMichael Kelley <mikelley@microsoft.com>
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6ba34171
......@@ -242,6 +242,10 @@ int hv_synic_alloc(void)
return 0;
err:
/*
* Any memory allocations that succeeded will be freed when
* the caller cleans up by calling hv_synic_free()
*/
return -ENOMEM;
}
......@@ -254,11 +258,9 @@ void hv_synic_free(void)
struct hv_per_cpu_context *hv_cpu
= per_cpu_ptr(hv_context.cpu_context, cpu);
if (hv_cpu->synic_event_page)
kfree(hv_cpu->clk_evt);
free_page((unsigned long)hv_cpu->synic_event_page);
if (hv_cpu->synic_message_page)
free_page((unsigned long)hv_cpu->synic_message_page);
if (hv_cpu->post_msg_page)
free_page((unsigned long)hv_cpu->post_msg_page);
}
......
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