Hello,
Is an unlock needed on line 53?
julia
---------- Forwarded message ----------
Date: Fri, 4 Oct 2019 19:14:33 +0800
From: kbuild test robot <lkp@xxxxxxxxx>
To: kbuild@xxxxxx
Cc: Julia Lawall <julia.lawall@xxxxxxx>
Subject: [staging:staging-testing 50/59] drivers/staging/wfx/hif_tx.c:53:2-8:
preceding lock on line 38
CC: kbuild-all@xxxxxx
CC: devel@xxxxxxxxxxxxxxxxxxxx
TO: "Jérôme Pouiller" <jerome.pouiller@xxxxxxxxxx>
CC: "Greg Kroah-Hartman" <gregkh@xxxxxxxxxxxxxxxxxxx>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing
head: 40115bbc40e2fd2de0e01ef2a28e0d09a1b5d0d1
commit: 4f8b7fabb15df3658564a98971fc67029be1815d [50/59] staging: wfx: allow to send commands to chip
:::::: branch date: 2 hours ago
:::::: commit date: 2 hours ago
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Reported-by: Julia Lawall <julia.lawall@xxxxxxx>
>> drivers/staging/wfx/hif_tx.c:53:2-8: preceding lock on line 38
# https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit/?id=4f8b7fabb15df3658564a98971fc67029be1815d
git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
git remote update staging
git checkout 4f8b7fabb15df3658564a98971fc67029be1815d
vim +53 drivers/staging/wfx/hif_tx.c
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 23
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 24 int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request, void *reply, size_t reply_len, bool async)
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 25 {
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 26 const char *mib_name = "";
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 27 const char *mib_sep = "";
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 28 int cmd = request->id;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 29 int vif = request->interface;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 30 int ret;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 31
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 32 WARN(wdev->hif_cmd.buf_recv && wdev->hif_cmd.async, "API usage error");
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 33
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 34 // Do not wait for any reply if chip is frozen
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 35 if (wdev->chip_frozen)
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 36 return -ETIMEDOUT;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 37
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 @38 mutex_lock(&wdev->hif_cmd.lock);
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 39 WARN(wdev->hif_cmd.buf_send, "data locking error");
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 40
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 41 // Note: call to complete() below has an implicit memory barrier that
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 42 // hopefully protect buf_send
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 43 wdev->hif_cmd.buf_send = request;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 44 wdev->hif_cmd.buf_recv = reply;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 45 wdev->hif_cmd.len_recv = reply_len;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 46 wdev->hif_cmd.async = async;
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 47 complete(&wdev->hif_cmd.ready);
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 48
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 49 wfx_bh_request_tx(wdev);
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 50
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 51 // NOTE: no timeout is catched async is enabled
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 52 if (async)
4f8b7fabb15df3 Jérôme Pouiller 2019-09-19 @53 return 0;
---
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