Description: Immediately after enabling NFC in settings, the user is not always able to connect to other NFC devices. The phone will not vibrate, and the shrinking UI will not appear. There is not any information recorded in the logcat when this occurs, so I am currently unable to attach a logcat of this issue. This does not occur every time, and is often fixed by restarting the device. Repro Steps: 1) Update a Flame to 20150407010204 2) Open the Settings app and enable NFC 3) Close the settings app and open the Gallery app 4) Touch the back of the DUT to another NFC enabled device and attempt to share an image from the gallery via the shrinking UI Actual: The phone does not vibrate, and the shrinking UI does not appear Expected: The phone is able to connect via NFC immediately after enabling NFC from settings. Environmental Variables: Device: Flame 3.0 (319MB)(Full Flash) Build ID: 20150407010204 Gaia: c710bac533b76635161315bf907d004e000549cb Gecko: ab0490972e1e Gonk: b83fc73de7b64594cd74b33e498bf08332b5d87b Version: 40.0a1 (3.0) Firmware Version: v18D-1 User Agent: Mozilla/5.0 (Mobile; rv:40.0) Gecko/40.0 Firefox/40.0 Repro frequency: 4/8

[Blocking Requested - why for this release]: Broken functionality. Adding qawanted for branch checks.

This issue reproduces on 2.2. Toggling on NFC doesn't always work for transferring files. Device: Flame 2.2 BuildID: 20150407002501 Gaia: 5e09637414269728f6f1bc0152d0160f3b6b380e Gecko: 245f37f44017 Gonk: ebad7da532429a6f5efadc00bf6ad8a41288a429 Version: 37.0 (2.2) Firmware Version: v18D-1 User Agent: Mozilla/5.0 (Mobile; rv:37.0) Gecko/37.0 Firefox/37.0 ------ NFC does NOT seem to work on 2.1. Tried rebooting and all and couldn't get it to work.

NFC was not supported in 2.1 if I remember correctly.

(In reply to Pi Wei Cheng [:piwei] from comment #2) > > NFC does NOT seem to work on 2.1. Tried rebooting and all and couldn't get > it to work. (In reply to KTucker [:KTucker] from comment #3) > NFC was not supported in 2.1 if I remember correctly. NFC is supported since v2.0. Please file another bug if you still met this problem in v2.1.

Thank you Yoshi for the information. This might be covered in bug 1146741 which is awaiting approval if not we will write up a new issue.

It seems not be able to reproduce, can you try new version?

I reproduced this bug 2 out of 2 attempts on today's 3.0 nightly. It doesn't really have to do with 'immediately' as title of this bug described, it's NFC sometimes simply doesn't work after enabling it. Rebooting the device seems to fix the issue. If you couldn't get it on first attempt, try disabling it and re-enable it.

(In reply to Pi Wei Cheng [:piwei] from comment #7) > I reproduced this bug 2 out of 2 attempts on today's 3.0 nightly. It doesn't > really have to do with 'immediately' as title of this bug described, it's > NFC sometimes simply doesn't work after enabling it. Rebooting the device > seems to fix the issue. If you couldn't get it on first attempt, try > disabling it and re-enable it. I can easily produce this issue on 2.2 and 3.0 according to Pi Wei's reproduce steps. (disabling it and re-enable it) Besides, disable/enable device screen would always fix this issue.

I found turning on/off RF frequently may cause this issue in Flame. In both diable/enable SE implementation, nfcd will check if it is in discovery mode now, if it is, it will turn off discovery mode, and reopen later. So this patch is trying to only turn on/off RF once when enable/disable NFC. Alison help test enable/disable NFC for 40 times and this issue cannot be reproduced.

Adding verifyme to verify this issue, also please check the duplicates STR's bug 1155887.

[Approval Request Comment] New bug User impact if declined: Sometimes NFC will not work after disable then enable Testing completed: Tested locally Risk to taking this patch (and alternatives if risky): Need to test basic NFC function again String or UUID changes made by this patch: No

This issue is verified fixed on Flame 3.0 master. NFC can be disabled and enabled multiple times and still works. Also verified bug 1155887 is fixed by successfully transferring multiple pictures in Gallery. Bug repro rate: 0/12 Device: Flame 3.0 Master (full flashed 319MB KK) BuildID: 20150422010202 Gaia: 15134b080b5f406e5aa36f5136c17dafb4e31f64 Gecko: 946ac85af8f4 Gonk: b83fc73de7b64594cd74b33e498bf08332b5d87b Version: 40.0a1 (3.0 Master) Firmware Version: v18D-1 User Agent: Mozilla/5.0 (Mobile; rv:40.0) Gecko/40.0 Firefox/40.0 Leaving verifyme keyword for v2.2 verification.

v2.2: https://github.com/mozilla-b2g/platform_system_nfcd/commit/999fe56a337357de00bfbd5fd596b1288e5bf76f

Adding qawanted to follow up and verify 2.2.

This issue is verified fixed on 2.2. NFC can be disabled and re-enabled and pictures can be transferred when it's enabled. Bug repro rate: 0/10. Device: Flame 2.2 (KK, 319MB mem, full flash) BuildID: 20150423002502 Gaia: b838d0e7c163e66660dcb6e387d8339944a7a30e Gecko: 8dce56574f28 Gonk: ebad7da532429a6f5efadc00bf6ad8a41288a429 Version: 37.0 (2.2) Firmware Version: v18D-1 User Agent: Mozilla/5.0 (Mobile; rv:37.0) Gecko/37.0 Firefox/37.0