All of lore.kernel.org
 help / color / mirror / Atom feed
From: Sakari Ailus <sakari.ailus@iki.fi>
To: linux-media@vger.kernel.org
Cc: laurent.pinchart@ideasonboard.com
Subject: [PATCH v2 01/18] smiapp: Take mutex during PLL update in sensor initialisation
Date: Thu,  2 Oct 2014 11:45:51 +0300	[thread overview]
Message-ID: <1412239568-8524-2-git-send-email-sakari.ailus@iki.fi> (raw)
In-Reply-To: <1412239568-8524-1-git-send-email-sakari.ailus@iki.fi>

From: Sakari Ailus <sakari.ailus@linux.intel.com>

The mutex does not serialise anything in this case but avoids a lockdep
warning from the control framework.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index 932ed9b..6174a59 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2677,7 +2677,9 @@ static int smiapp_registered(struct v4l2_subdev *subdev)
 		pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
 	pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
 
+	mutex_lock(&sensor->mutex);
 	rval = smiapp_update_mode(sensor);
+	mutex_unlock(&sensor->mutex);
 	if (rval) {
 		dev_err(&client->dev, "update mode failed\n");
 		goto out_nvm_release;
-- 
1.7.10.4


  reply	other threads:[~2014-10-02  8:46 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-02  8:45 [PATCH v2] smiapp and smiapp-pll: more robust parameter handling, cleanups Sakari Ailus
2014-10-02  8:45 ` Sakari Ailus [this message]
2014-10-02  8:45 ` [PATCH v2 02/18] smiapp-pll: Correct clock debug prints Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 03/18] smiapp-pll: The clock tree values are unsigned --- fix " Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 04/18] smiapp-pll: Separate bounds checking into a separate function Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 05/18] smiapp-pll: External clock frequency isn't an output value Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 06/18] smiapp-pll: Unify OP and VT PLL structs Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 07/18] smiapp-pll: Calculate OP clocks only for sensors that have them Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 08/18] smiapp-pll: Don't validate OP clocks if there are none Sakari Ailus
2014-10-02  8:45 ` [PATCH v2 09/18] smiapp: The PLL calculator handles sensors with VT clocks only Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 10/18] smiapp: Remove validation of op_pix_clk_div Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 11/18] smiapp-pll: Add pixel rate in pixel array as output parameters Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 12/18] smiapp: Use actual pixel rate calculated by the PLL calculator Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 13/18] smiapp: Split calculating PLL with sensor's limits from updating it Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 14/18] smiapp: Gather information on valid link rate and BPP combinations Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 15/18] smiapp: Take valid link frequencies into account in supported mbus codes Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 16/18] smiapp: Clean up smiapp_set_format() Sakari Ailus
2014-10-02 12:09   ` [PATCH v2.1 " Sakari Ailus
2014-10-02 13:53     ` Laurent Pinchart
2014-10-02  8:46 ` [PATCH v2 17/18] smiapp: Set valid link frequency range Sakari Ailus
2014-10-02  8:46 ` [PATCH v2 18/18] smiapp: Update PLL when setting format Sakari Ailus

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1412239568-8524-2-git-send-email-sakari.ailus@iki.fi \
    --to=sakari.ailus@iki.fi \
    --cc=laurent.pinchart@ideasonboard.com \
    --cc=linux-media@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.