diff options
| author | Bagas Sanjaya <bagasdotme@gmail.com> | 2023-10-17 15:08:12 +0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-25 12:16:11 +0200 |
| commit | fd9c3d0fb4880e3ff37e0a80d0500a0ac16744dd (patch) | |
| tree | aa4eb531fc8293172d65fb3a42b7136eb0b9b60a /drivers/net/wwan/iosm/iosm_ipc_trace.c | |
| parent | 9312862d7d03cdc50d79f1444181e42d1b9188c2 (diff) | |
Revert "net: wwan: iosm: enable runtime pm support for 7560"
commit 1db34aa58d80988f5ee99d2fd9d8f7489c3b0681 upstream.
Runtime power management support breaks Intel LTE modem where dmesg dump
showes timeout errors:
```
[ 72.027442] iosm 0000:01:00.0: msg timeout
[ 72.531638] iosm 0000:01:00.0: msg timeout
[ 73.035414] iosm 0000:01:00.0: msg timeout
[ 73.540359] iosm 0000:01:00.0: msg timeout
```
Furthermore, when shutting down with `poweroff` and modem attached, the
system rebooted instead of powering down as expected. The modem works
again only after power cycling.
Revert runtime power management support for IOSM driver as introduced by
commit e4f5073d53be6c ("net: wwan: iosm: enable runtime pm support for
7560").
Fixes: e4f5073d53be ("net: wwan: iosm: enable runtime pm support for 7560")
Reported-by: Martin <mwolf@adiumentum.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217996
Link: https://lore.kernel.org/r/267abf02-4b60-4a2e-92cd-709e3da6f7d3@gmail.com/
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_trace.c')
| -rw-r--r-- | drivers/net/wwan/iosm/iosm_ipc_trace.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_trace.c b/drivers/net/wwan/iosm/iosm_ipc_trace.c index 4368373797b69..eeecfa3d10c5a 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_trace.c +++ b/drivers/net/wwan/iosm/iosm_ipc_trace.c @@ -3,9 +3,7 @@ * Copyright (C) 2020-2021 Intel Corporation. */ -#include <linux/pm_runtime.h> #include <linux/wwan.h> - #include "iosm_ipc_trace.h" /* sub buffer size and number of sub buffer */ @@ -99,8 +97,6 @@ static ssize_t ipc_trace_ctrl_file_write(struct file *filp, if (ret) return ret; - pm_runtime_get_sync(ipc_trace->ipc_imem->dev); - mutex_lock(&ipc_trace->trc_mutex); if (val == TRACE_ENABLE && ipc_trace->mode != TRACE_ENABLE) { ipc_trace->channel = ipc_imem_sys_port_open(ipc_trace->ipc_imem, @@ -121,10 +117,6 @@ static ssize_t ipc_trace_ctrl_file_write(struct file *filp, ret = count; unlock: mutex_unlock(&ipc_trace->trc_mutex); - - pm_runtime_mark_last_busy(ipc_trace->ipc_imem->dev); - pm_runtime_put_autosuspend(ipc_trace->ipc_imem->dev); - return ret; } |