From ffc151f3c83c25ec06d5ad13a78d0fc066c7167e Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Wed, 6 May 2015 17:47:40 -0700 Subject: [PATCH] Drivers: hv: vmbus: do cleanup on all vmbus_open() failure paths In case there was an error reported in the response to the CHANNELMSG_OPENCHANNEL call we need to do the cleanup as a vmbus_open() user won't be doing it after receiving an error. The cleanup should be done on all failure paths. We also need to avoid returning open_info->response.open_result.status as the return value as all other errors we return from vmbus_open() are -EXXX and vmbus_open() callers are not supposed to analyze host error codes. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/channel.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 54da66dc7d16..7a1c2db1826b 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -178,19 +178,18 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, goto error1; } - - if (open_info->response.open_result.status) - err = open_info->response.open_result.status; - spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); list_del(&open_info->msglistentry); spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags); - if (err == 0) - newchannel->state = CHANNEL_OPENED_STATE; + if (open_info->response.open_result.status) { + err = -EAGAIN; + goto error_gpadl; + } + newchannel->state = CHANNEL_OPENED_STATE; kfree(open_info); - return err; + return 0; error1: spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); -- 2.20.1