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linux-sg2042
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hv: vmbus_open(): reset the channel state on ENOMEM 

Without this patch, the state is put to CHANNEL_OPENING_STATE, and when
the driver is loaded next time, vmbus_open() will fail immediately due to
newchannel->state != CHANNEL_OPEN_STATE.

CC: "K. Y. Srinivasan" <kys@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dexuan Cui 2015-02-27 11:26:00 -08:00 committed by Greg Kroah-Hartman
parent 89f9f6796d
commit ac0d12b7ce
1 changed files with 5 additions and 3 deletions
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8
drivers/hv/channel.c
View File

@ -89,9 +89,10 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
out = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
get_order(send_ringbuffer_size + recv_ringbuffer_size));
if (!out)
return -ENOMEM;
if (!out) {
err = -ENOMEM;
goto error0;
}
in = (void *)((unsigned long)out + send_ringbuffer_size);
@ -199,6 +200,7 @@ error0:
free_pages((unsigned long)out,
get_order(send_ringbuffer_size + recv_ringbuffer_size));
kfree(open_info);
newchannel->state = CHANNEL_OPEN_STATE;
return err;
}
EXPORT_SYMBOL_GPL(vmbus_open);