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| author | Thomas Gleixner | 2017-11-23 16:29:05 +0100 |
|---|---|---|
| committer | Thomas Gleixner | 2017-11-23 16:29:05 +0100 |
| commit | 866c9b94ef968445c52214b3748ecc52a8491bca (patch) | |
| tree | 1fd073acb9be8e89e77b35c41e2964ac6feabee6 /drivers/gpu/drm/drm_dp_dual_mode_helper.c | |
| parent | timekeeping: Remove CONFIG_GENERIC_TIME_VSYSCALL_OLD (diff) | |
| parent | treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts (diff) | |
| download | kernel-qcow2-linux-866c9b94ef968445c52214b3748ecc52a8491bca.tar.gz kernel-qcow2-linux-866c9b94ef968445c52214b3748ecc52a8491bca.tar.xz kernel-qcow2-linux-866c9b94ef968445c52214b3748ecc52a8491bca.zip | |
Merge tag 'for-linus-timers-conversion-final-v4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into timers/urgent
Pull the last batch of manual timer conversions from Kees Cook:
- final batch of "non trivial" timer conversions (multi-tree dependencies,
things Coccinelle couldn't handle, etc).
- treewide conversions via Coccinelle, in 4 steps:
- DEFINE_TIMER() functions converted to struct timer_list * argument
- init_timer() -> setup_timer()
- setup_timer() -> timer_setup()
- setup_timer() -> timer_setup() (with a single embedded structure)
- deprecated timer API removals (init_timer(), setup_*timer())
- finalization of new API (remove global casts)
Diffstat (limited to 'drivers/gpu/drm/drm_dp_dual_mode_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_dual_mode_helper.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_dp_dual_mode_helper.c b/drivers/gpu/drm/drm_dp_dual_mode_helper.c index 0ef9011a1856..02a50929af67 100644 --- a/drivers/gpu/drm/drm_dp_dual_mode_helper.c +++ b/drivers/gpu/drm/drm_dp_dual_mode_helper.c @@ -410,6 +410,7 @@ int drm_lspcon_get_mode(struct i2c_adapter *adapter, { u8 data; int ret = 0; + int retry; if (!mode) { DRM_ERROR("NULL input\n"); @@ -417,10 +418,19 @@ int drm_lspcon_get_mode(struct i2c_adapter *adapter, } /* Read Status: i2c over aux */ - ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_LSPCON_CURRENT_MODE, - &data, sizeof(data)); + for (retry = 0; retry < 6; retry++) { + if (retry) + usleep_range(500, 1000); + + ret = drm_dp_dual_mode_read(adapter, + DP_DUAL_MODE_LSPCON_CURRENT_MODE, + &data, sizeof(data)); + if (!ret) + break; + } + if (ret < 0) { - DRM_ERROR("LSPCON read(0x80, 0x41) failed\n"); + DRM_DEBUG_KMS("LSPCON read(0x80, 0x41) failed\n"); return -EFAULT; } |