blob: 3949941e4690cd0a6684b5a2b991f8121e0b0090 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
From d88f88dfdce0c6911802cb9a0da0c43ade854183 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Fri, 4 Dec 2020 16:11:34 +0100
Subject: [PATCH] drm/vc4: Simplify a bit the global atomic_check
When we can't allocate a new channel, we can simply return instead of
having to handle both cases, and that simplifies a bit the code.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_kms.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -793,6 +793,7 @@ static int vc4_pv_muxing_atomic_check(st
to_vc4_crtc_state(new_crtc_state);
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
unsigned int matching_channels;
+ unsigned int channel;
if (vc4->firmware_kms)
continue;
@@ -836,14 +837,12 @@ static int vc4_pv_muxing_atomic_check(st
* but it works so far.
*/
matching_channels = hvs_new_state->unassigned_channels & vc4_crtc->data->hvs_available_channels;
- if (matching_channels) {
- unsigned int channel = ffs(matching_channels) - 1;
-
- new_vc4_crtc_state->assigned_channel = channel;
- hvs_new_state->unassigned_channels &= ~BIT(channel);
- } else {
+ if (!matching_channels)
return -EINVAL;
- }
+
+ channel = ffs(matching_channels) - 1;
+ new_vc4_crtc_state->assigned_channel = channel;
+ hvs_new_state->unassigned_channels &= ~BIT(channel);
}
return 0;
|
