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linux (Generic): revert DVBSky T680CI commit

Browse Source 
https://forum.kodi.tv/showthread.php?tid=298461&pid=2759455#pid2759455
https://www.mail-archive.com/linux-media@vger.kernel.org/msg133781.html
This commit is contained in:
MilhouseVH 2018-08-16 21:26:24 +01:00
parent 01847255f4
commit 1413b4a227
1 changed files with 60 additions and 0 deletions
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60
packages/linux/patches/default/linux-999-revert-dvb-t680ci-commit.patch Normal file
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@ -0,0 +1,60 @@
From c24b2ad9c085685c2cace7733c22dbc80a95de27 Mon Sep 17 00:00:00 2001
From: MilhouseVH <milhouseVH.github@nmacleod.com>
Date: Thu, 16 Aug 2018 21:24:14 +0100
Subject: [PATCH] Revert "media: dvbsky: use just one mutex for serializing
device R/W ops"
This reverts commit 7d95fb746c4eece67308f1642a666ea1ebdbd2cc.
---
drivers/media/usb/dvb-usb-v2/dvbsky.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/dvbsky.c b/drivers/media/usb/dvb-usb-v2/dvbsky.c
index 1aa88d9..e28bd88 100644
--- a/drivers/media/usb/dvb-usb-v2/dvbsky.c
+++ b/drivers/media/usb/dvb-usb-v2/dvbsky.c
@@ -31,6 +31,7 @@ MODULE_PARM_DESC(disable_rc, "Disable inbuilt IR receiver.");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
struct dvbsky_state {
+ struct mutex stream_mutex;
u8 ibuf[DVBSKY_BUF_LEN];
u8 obuf[DVBSKY_BUF_LEN];
u8 last_lock;
@@ -67,17 +68,18 @@ static int dvbsky_usb_generic_rw(struct dvb_usb_device *d,
static int dvbsky_stream_ctrl(struct dvb_usb_device *d, u8 onoff)
{
+ struct dvbsky_state *state = d_to_priv(d);
int ret;
- static u8 obuf_pre[3] = { 0x37, 0, 0 };
- static u8 obuf_post[3] = { 0x36, 3, 0 };
+ u8 obuf_pre[3] = { 0x37, 0, 0 };
+ u8 obuf_post[3] = { 0x36, 3, 0 };
- mutex_lock(&d->usb_mutex);
- ret = dvb_usbv2_generic_rw_locked(d, obuf_pre, 3, NULL, 0);
+ mutex_lock(&state->stream_mutex);
+ ret = dvbsky_usb_generic_rw(d, obuf_pre, 3, NULL, 0);
if (!ret && onoff) {
msleep(20);
- ret = dvb_usbv2_generic_rw_locked(d, obuf_post, 3, NULL, 0);
+ ret = dvbsky_usb_generic_rw(d, obuf_post, 3, NULL, 0);
}
- mutex_unlock(&d->usb_mutex);
+ mutex_unlock(&state->stream_mutex);
return ret;
}
@@ -606,6 +608,8 @@ static int dvbsky_init(struct dvb_usb_device *d)
if (ret)
return ret;
*/
+ mutex_init(&state->stream_mutex);
+
state->last_lock = 0;
return 0;
--
2.14.1