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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-01 09:51:57 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-01 09:51:57 -0800 |
commit | 5d8515bc232172963a4cef007e97b08c5e4d0533 (patch) | |
tree | 13e774dbe2d663ca1fbf2a77933ef8deabd4d507 /drivers/staging/media | |
parent | db5933225f2fe50d3b91ebbba73ed9c3b703b99a (diff) | |
parent | 3384e01179eff2b2fe91ba7bcad98ee2be5f87f7 (diff) | |
download | linux-stable-5d8515bc232172963a4cef007e97b08c5e4d0533.tar.gz linux-stable-5d8515bc232172963a4cef007e97b08c5e4d0533.tar.bz2 linux-stable-5d8515bc232172963a4cef007e97b08c5e4d0533.zip |
Merge tag 'staging-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here is the big Staging and IIO driver patches for 4.16-rc1.
There is the normal amount of new IIO drivers added, like all
releases.
The networking IPX and the ncpfs filesystem are moved into the staging
tree, as they are on their way out of the kernel due to lack of use
anymore.
The visorbus subsystem finall has started moving out of the staging
tree to the "real" part of the kernel, and the most and fsl-mc
codebases are almost ready to move out, that will probably happen for
4.17-rc1 if all goes well.
Other than that, there is a bunch of license header cleanups in the
tree, along with the normal amount of coding style churn that we all
know and love for this codebase. I also got frustrated at the
Meltdown/Spectre mess and took it out on the dgnc tty driver, deleting
huge chunks of it that were never even being used.
Full details of everything is in the shortlog.
All of these patches have been in linux-next for a while with no
reported issues"
* tag 'staging-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (627 commits)
staging: rtlwifi: remove redundant initialization of 'cfg_cmd'
staging: rtl8723bs: remove a couple of redundant initializations
staging: comedi: reformat lines to 80 chars or less
staging: lustre: separate a connection destroy from free struct kib_conn
Staging: rtl8723bs: Use !x instead of NULL comparison
Staging: rtl8723bs: Remove dead code
Staging: rtl8723bs: Change names to conform to the kernel code
staging: ccree: Fix missing blank line after declaration
staging: rtl8188eu: remove redundant initialization of 'pwrcfgcmd'
staging: rtlwifi: remove unused RTLHALMAC_ST and RTLPHYDM_ST
staging: fbtft: remove unused FB_TFT_SSD1325 kconfig
staging: comedi: dt2811: remove redundant initialization of 'ns'
staging: wilc1000: fix alignments to match open parenthesis
staging: wilc1000: removed unnecessary defined enums typedef
staging: wilc1000: remove unnecessary use of parentheses
staging: rtl8192u: remove redundant initialization of 'timeout'
staging: sm750fb: fix CamelCase for dispSet var
staging: lustre: lnet/selftest: fix compile error on UP build
staging: rtl8723bs: hal_com_phycfg: Remove unneeded semicolons
staging: rts5208: Fix "seg_no" calculation in reset_ms_card()
...
Diffstat (limited to 'drivers/staging/media')
-rw-r--r-- | drivers/staging/media/imx/imx-media-csi.c | 8 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx-media-fim.c | 30 | ||||
-rw-r--r-- | drivers/staging/media/imx/imx-media.h | 2 |
3 files changed, 20 insertions, 20 deletions
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index bb1d6dafca83..26994b429cf2 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -207,13 +207,9 @@ static irqreturn_t csi_idmac_eof_interrupt(int irq, void *dev_id) goto unlock; } - if (priv->fim) { - struct timespec cur_ts; - - ktime_get_ts(&cur_ts); + if (priv->fim) /* call frame interval monitor */ - imx_media_fim_eof_monitor(priv->fim, &cur_ts); - } + imx_media_fim_eof_monitor(priv->fim, ktime_get()); csi_vb2_buf_done(priv); diff --git a/drivers/staging/media/imx/imx-media-fim.c b/drivers/staging/media/imx/imx-media-fim.c index 47275ef803f3..6df189135db8 100644 --- a/drivers/staging/media/imx/imx-media-fim.c +++ b/drivers/staging/media/imx/imx-media-fim.c @@ -66,7 +66,7 @@ struct imx_media_fim { int icap_flags; int counter; - struct timespec last_ts; + ktime_t last_ts; unsigned long sum; /* usec */ unsigned long nominal; /* usec */ @@ -147,22 +147,26 @@ static void send_fim_event(struct imx_media_fim *fim, unsigned long error) * (presumably random) interrupt latency. */ static void frame_interval_monitor(struct imx_media_fim *fim, - struct timespec *ts) + ktime_t timestamp) { - unsigned long interval, error, error_avg; + long long interval, error; + unsigned long error_avg; bool send_event = false; - struct timespec diff; if (!fim->enabled || ++fim->counter <= 0) goto out_update_ts; - diff = timespec_sub(*ts, fim->last_ts); - interval = diff.tv_sec * 1000 * 1000 + diff.tv_nsec / 1000; - error = abs(interval - fim->nominal); + /* max error is less than l00µs, so use 32-bit division or fail */ + interval = ktime_to_ns(ktime_sub(timestamp, fim->last_ts)); + error = abs(interval - NSEC_PER_USEC * (u64)fim->nominal); + if (error > U32_MAX) + error = U32_MAX; + else + error = abs((u32)error / NSEC_PER_USEC); if (fim->tolerance_max && error >= fim->tolerance_max) { dev_dbg(fim->sd->dev, - "FIM: %lu ignored, out of tolerance bounds\n", + "FIM: %llu ignored, out of tolerance bounds\n", error); fim->counter--; goto out_update_ts; @@ -184,7 +188,7 @@ static void frame_interval_monitor(struct imx_media_fim *fim, } out_update_ts: - fim->last_ts = *ts; + fim->last_ts = timestamp; if (send_event) send_fim_event(fim, error_avg); } @@ -195,14 +199,14 @@ out_update_ts: * to interrupt latency. */ static void fim_input_capture_handler(int channel, void *dev_id, - struct timespec *ts) + ktime_t timestamp) { struct imx_media_fim *fim = dev_id; unsigned long flags; spin_lock_irqsave(&fim->lock, flags); - frame_interval_monitor(fim, ts); + frame_interval_monitor(fim, timestamp); if (!completion_done(&fim->icap_first_event)) complete(&fim->icap_first_event); @@ -405,14 +409,14 @@ err_free: * the frame_interval_monitor() is called by the input capture event * callback handler in that case. */ -void imx_media_fim_eof_monitor(struct imx_media_fim *fim, struct timespec *ts) +void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp) { unsigned long flags; spin_lock_irqsave(&fim->lock, flags); if (!icap_enabled(fim)) - frame_interval_monitor(fim, ts); + frame_interval_monitor(fim, timestamp); spin_unlock_irqrestore(&fim->lock, flags); } diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h index d409170632bd..ac3ab115394f 100644 --- a/drivers/staging/media/imx/imx-media.h +++ b/drivers/staging/media/imx/imx-media.h @@ -280,7 +280,7 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd, /* imx-media-fim.c */ struct imx_media_fim; -void imx_media_fim_eof_monitor(struct imx_media_fim *fim, struct timespec *ts); +void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp); int imx_media_fim_set_stream(struct imx_media_fim *fim, const struct v4l2_fract *frame_interval, bool on); |