linux-kernel - include/linux/spinlock.h:393:9: sparse: sparse: context imbalance in 'linflex_console_write'

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Message-ID: <201910011019.MzeuDvQA%lkp@intel.com>
Date:   Tue, 1 Oct 2019 10:23:29 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Stefan-gabriel Mirea <stefan-gabriel.mirea@....com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stoica Cosmin-Stefan <cosmin.stoica@....com>,
        "Adrian.Nitu" <adrian.nitu@...escale.com>,
        Larisa Grigore <Larisa.Grigore@....com>,
        Ana Nedelcu <B56683@...escale.com>,
        Mihaela Martinas <Mihaela.Martinas@...escale.com>,
        Matthew Nunez <matthew.nunez@....com>
Subject: include/linux/spinlock.h:393:9: sparse: sparse: context imbalance in
 'linflex_console_write' - unexpected unlock

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c
commit: 09864c1cdf5c537bd01bff45181406e422ea988c tty: serial: Add linflexuart driver for S32V234
date:   4 weeks ago
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-rc1-37-gd466a02-dirty
        git checkout 09864c1cdf5c537bd01bff45181406e422ea988c
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

>> include/linux/spinlock.h:393:9: sparse: sparse: context imbalance in 'linflex_console_write' - unexpected unlock

vim +/linflex_console_write +393 include/linux/spinlock.h

c2f21ce2e31286 Thomas Gleixner 2009-12-02  390  
3490565b633c70 Denys Vlasenko  2015-07-13  391  static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
c2f21ce2e31286 Thomas Gleixner 2009-12-02  392  {
c2f21ce2e31286 Thomas Gleixner 2009-12-02 @393  	raw_spin_unlock_irqrestore(&lock->rlock, flags);
c2f21ce2e31286 Thomas Gleixner 2009-12-02  394  }
c2f21ce2e31286 Thomas Gleixner 2009-12-02  395  

:::::: The code at line 393 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock

:::::: TO: Thomas Gleixner <tglx@...utronix.de>
:::::: CC: Thomas Gleixner <tglx@...utronix.de>

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