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authorStephen Hemminger <stephen@networkplumber.org>2017-02-12 09:02:22 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-14 21:20:35 +0300
commit5529eaf6e79a61e0ca7ade257f31d2ababc7f6c9 (patch)
treea619c818c8ea2b3f1a4c9b39281915c34771bac2 /drivers/hv/ring_buffer.c
parentb71e328297a3a578c482fb4814e737a0ec185839 (diff)
downloadlinux-5529eaf6e79a61e0ca7ade257f31d2ababc7f6c9.tar.xz
vmbus: remove conditional locking of vmbus_write
All current usage of vmbus write uses the acquire_lock flag, therefore having it be optional is unnecessary. This also fixes a sparse warning since sparse doesn't like when a function has conditional locking. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/ring_buffer.c')
-rw-r--r--drivers/hv/ring_buffer.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 1b70e034ef92..1a1e70a45146 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -284,7 +284,7 @@ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)
/* Write to the ring buffer. */
int hv_ringbuffer_write(struct vmbus_channel *channel,
- struct kvec *kv_list, u32 kv_count, bool lock)
+ struct kvec *kv_list, u32 kv_count)
{
int i = 0;
u32 bytes_avail_towrite;
@@ -304,8 +304,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
totalbytes_towrite += sizeof(u64);
- if (lock)
- spin_lock_irqsave(&outring_info->ring_lock, flags);
+ spin_lock_irqsave(&outring_info->ring_lock, flags);
bytes_avail_towrite = hv_get_bytes_to_write(outring_info);
@@ -315,8 +314,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
* is empty since the read index == write index.
*/
if (bytes_avail_towrite <= totalbytes_towrite) {
- if (lock)
- spin_unlock_irqrestore(&outring_info->ring_lock, flags);
+ spin_unlock_irqrestore(&outring_info->ring_lock, flags);
return -EAGAIN;
}
@@ -347,8 +345,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
hv_set_next_write_location(outring_info, next_write_location);
- if (lock)
- spin_unlock_irqrestore(&outring_info->ring_lock, flags);
+ spin_unlock_irqrestore(&outring_info->ring_lock, flags);
hv_signal_on_write(old_write, channel);