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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-30 08:47:41 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-30 08:47:41 +0200 |
| commit | 44cc6c08da0b6c8321c6740bbb6a0c6feb45b2c2 (patch) | |
| tree | ec97ee26c9715f8da24377e9cacc63261b0aa2ab /drivers/hv/ring_buffer.c | |
| parent | 40a4a5727f21a0e439d317aa99953e24467605eb (diff) | |
| parent | 2d4df13c0f9ef56452b1d9a9016cb3946e17bfe5 (diff) | |
| download | blackbird-obmc-linux-44cc6c08da0b6c8321c6740bbb6a0c6feb45b2c2.tar.gz blackbird-obmc-linux-44cc6c08da0b6c8321c6740bbb6a0c6feb45b2c2.zip | |
Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next
Backmerge to catch up with 4.3. slightly more involved conflict in the
irq code, but nothing beyond adjacent changes.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/hv/ring_buffer.c')
| -rw-r--r-- | drivers/hv/ring_buffer.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 6361d124f67d..70a1a9a22f87 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -103,10 +103,9 @@ static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi) * there is room for the producer to send the pending packet. */ -static bool hv_need_to_signal_on_read(u32 old_rd, - struct hv_ring_buffer_info *rbi) +static bool hv_need_to_signal_on_read(u32 prev_write_sz, + struct hv_ring_buffer_info *rbi) { - u32 prev_write_sz; u32 cur_write_sz; u32 r_size; u32 write_loc = rbi->ring_buffer->write_index; @@ -123,10 +122,6 @@ static bool hv_need_to_signal_on_read(u32 old_rd, cur_write_sz = write_loc >= read_loc ? r_size - (write_loc - read_loc) : read_loc - write_loc; - prev_write_sz = write_loc >= old_rd ? r_size - (write_loc - old_rd) : - old_rd - write_loc; - - if ((prev_write_sz < pending_sz) && (cur_write_sz >= pending_sz)) return true; @@ -517,7 +512,6 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, u32 next_read_location = 0; u64 prev_indices = 0; unsigned long flags; - u32 old_read; if (buflen <= 0) return -EINVAL; @@ -528,8 +522,6 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, &bytes_avail_toread, &bytes_avail_towrite); - old_read = bytes_avail_toread; - /* Make sure there is something to read */ if (bytes_avail_toread < buflen) { spin_unlock_irqrestore(&inring_info->ring_lock, flags); @@ -560,7 +552,7 @@ int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info, void *buffer, spin_unlock_irqrestore(&inring_info->ring_lock, flags); - *signal = hv_need_to_signal_on_read(old_read, inring_info); + *signal = hv_need_to_signal_on_read(bytes_avail_towrite, inring_info); return 0; } |
