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authorDexuan Cui <decui@microsoft.com>2015-02-27 11:26:00 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-01 19:30:07 -0800
commitac0d12b7cee73b4b4b769ea58c62ec7042c6be13 (patch)
tree54438c288b9ddf6babf182d27b435222f7660db0 /drivers/hv
parent89f9f6796d41e10e224b0cb0027ddd78cb881f65 (diff)
downloadlinux-ac0d12b7cee73b4b4b769ea58c62ec7042c6be13.tar.bz2
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>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/channel.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 2978f5ee8d2a..26dcf268b093 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -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);