[PATCH] ASoC: rockchip: i2s: Fix concurrency between tx/rx

[kernel test robot]

Hi Sugar,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on rockchip/for-next]
[also build test ERROR on v5.14]
[cannot apply to asoc/for-next next-20210827]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Sugar-Zhang/ASoC-rockchip-i2s-Fix-concurrency-between-tx-rx/20210830-103815
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/69f422462083a0abbfbe83c9ed6628dc6cc728a9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sugar-Zhang/ASoC-rockchip-i2s-Fix-concurrency-between-tx-rx/20210830-103815
        git checkout 69f422462083a0abbfbe83c9ed6628dc6cc728a9
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

   sound/soc/rockchip/rockchip_i2s.c: In function 'rockchip_snd_txctrl':
>> sound/soc/rockchip/rockchip_i2s.c:97:20: error: 'lock' undeclared (first use in this function); did you mean 'flock'?
      97 |         spin_lock(&lock);
         |                    ^~~~
         |                    flock
   sound/soc/rockchip/rockchip_i2s.c:97:20: note: each undeclared identifier is reported only once for each function it appears in
   sound/soc/rockchip/rockchip_i2s.c: In function 'rockchip_snd_rxctrl':
   sound/soc/rockchip/rockchip_i2s.c:146:20: error: 'lock' undeclared (first use in this function); did you mean 'flock'?
     146 |         spin_lock(&lock);
         |                    ^~~~
         |                    flock


vim +97 sound/soc/rockchip/rockchip_i2s.c

    91	
    92	static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
    93	{
    94		unsigned int val = 0;
    95		int retry = 10;
    96	
  > 97		spin_lock(&lock);
    98		if (on) {
    99			regmap_update_bits(i2s->regmap, I2S_DMACR,
   100					   I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
   101	
   102			regmap_update_bits(i2s->regmap, I2S_XFER,
   103					   I2S_XFER_TXS_START | I2S_XFER_RXS_START,
   104					   I2S_XFER_TXS_START | I2S_XFER_RXS_START);
   105	
   106			i2s->tx_start = true;
   107		} else {
   108			i2s->tx_start = false;
   109	
   110			regmap_update_bits(i2s->regmap, I2S_DMACR,
   111					   I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
   112	
   113			if (!i2s->rx_start) {
   114				regmap_update_bits(i2s->regmap, I2S_XFER,
   115						   I2S_XFER_TXS_START |
   116						   I2S_XFER_RXS_START,
   117						   I2S_XFER_TXS_STOP |
   118						   I2S_XFER_RXS_STOP);
   119	
   120				udelay(150);
   121				regmap_update_bits(i2s->regmap, I2S_CLR,
   122						   I2S_CLR_TXC | I2S_CLR_RXC,
   123						   I2S_CLR_TXC | I2S_CLR_RXC);
   124	
   125				regmap_read(i2s->regmap, I2S_CLR, &val);
   126	
   127				/* Should wait for clear operation to finish */
   128				while (val) {
   129					regmap_read(i2s->regmap, I2S_CLR, &val);
   130					retry--;
   131					if (!retry) {
   132						dev_warn(i2s->dev, "fail to clear\n");
   133						break;
   134					}
   135				}
   136			}
   137		}
   138		spin_unlock(&lock);
   139	}
   140	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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