Hi Harish,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on bluetooth-next/master]
[also build test WARNING on next-20190328]
[cannot apply to v5.1-rc2]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Harish-Bandi/Bluetooth-hci_qca-Added-support-for-WCN3998/20190328-213357
base:   
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git 
master
config: riscv-allmodconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 8.1.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=riscv 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   drivers/bluetooth/btqca.c: In function 'qca_uart_setup':
>> drivers/bluetooth/btqca.c:369:3: warning: 'rom_ver' may be used 
>> uninitialized in this function [-Wmaybe-uninitialized]
      snprintf(config.fwname, sizeof(config.fwname),
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        "qca/crnv%02x.bin", rom_ver);
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/rom_ver +369 drivers/bluetooth/btqca.c

83e81961 Ben Young Tae Kim      2015-08-10  333  
aadebac4 Balakrishna Godavarthi 2018-08-03  334  int qca_uart_setup(struct 
hci_dev *hdev, uint8_t baudrate,
aadebac4 Balakrishna Godavarthi 2018-08-03  335                    enum 
qca_btsoc_type soc_type, u32 soc_ver)
83e81961 Ben Young Tae Kim      2015-08-10  336  {
83e81961 Ben Young Tae Kim      2015-08-10  337         struct rome_config 
config;
83e81961 Ben Young Tae Kim      2015-08-10  338         int err;
4219d468 Balakrishna Godavarthi 2018-08-03  339         u8 rom_ver;
83e81961 Ben Young Tae Kim      2015-08-10  340  
ba493d4f Balakrishna Godavarthi 2018-08-03  341         bt_dev_dbg(hdev, "QCA 
setup on UART");
83e81961 Ben Young Tae Kim      2015-08-10  342  
83e81961 Ben Young Tae Kim      2015-08-10  343         config.user_baud_rate = 
baudrate;
83e81961 Ben Young Tae Kim      2015-08-10  344  
83e81961 Ben Young Tae Kim      2015-08-10  345         /* Download rampatch 
file */
83e81961 Ben Young Tae Kim      2015-08-10  346         config.type = 
TLV_TYPE_PATCH;
cc8a70bd Harish Bandi           2019-03-27  347         if 
(qca_is_wcn399x(soc_type)) {
4219d468 Balakrishna Godavarthi 2018-08-03  348                 /* Firmware 
files to download are based on ROM version.
4219d468 Balakrishna Godavarthi 2018-08-03  349                  * ROM version 
is derived from last two bytes of soc_ver.
4219d468 Balakrishna Godavarthi 2018-08-03  350                  */
4219d468 Balakrishna Godavarthi 2018-08-03  351                 rom_ver = 
((soc_ver & 0x00000f00) >> 0x04) |
4219d468 Balakrishna Godavarthi 2018-08-03  352                             
(soc_ver & 0x0000000f);
4219d468 Balakrishna Godavarthi 2018-08-03  353                 
snprintf(config.fwname, sizeof(config.fwname),
4219d468 Balakrishna Godavarthi 2018-08-03  354                          
"qca/crbtfw%02x.tlv", rom_ver);
4219d468 Balakrishna Godavarthi 2018-08-03  355         } else {
4219d468 Balakrishna Godavarthi 2018-08-03  356                 
snprintf(config.fwname, sizeof(config.fwname),
4219d468 Balakrishna Godavarthi 2018-08-03  357                          
"qca/rampatch_%08x.bin", soc_ver);
4219d468 Balakrishna Godavarthi 2018-08-03  358         }
4219d468 Balakrishna Godavarthi 2018-08-03  359  
ba493d4f Balakrishna Godavarthi 2018-08-03  360         err = 
qca_download_firmware(hdev, &config);
83e81961 Ben Young Tae Kim      2015-08-10  361         if (err < 0) {
ba493d4f Balakrishna Godavarthi 2018-08-03  362                 
bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
83e81961 Ben Young Tae Kim      2015-08-10  363                 return err;
83e81961 Ben Young Tae Kim      2015-08-10  364         }
83e81961 Ben Young Tae Kim      2015-08-10  365  
83e81961 Ben Young Tae Kim      2015-08-10  366         /* Download NVM 
configuration */
83e81961 Ben Young Tae Kim      2015-08-10  367         config.type = 
TLV_TYPE_NVM;
cc8a70bd Harish Bandi           2019-03-27  368         if 
(qca_is_wcn399x(soc_type))
4219d468 Balakrishna Godavarthi 2018-08-03 @369                 
snprintf(config.fwname, sizeof(config.fwname),
4219d468 Balakrishna Godavarthi 2018-08-03  370                          
"qca/crnv%02x.bin", rom_ver);
4219d468 Balakrishna Godavarthi 2018-08-03  371         else
4219d468 Balakrishna Godavarthi 2018-08-03  372                 
snprintf(config.fwname, sizeof(config.fwname),
4219d468 Balakrishna Godavarthi 2018-08-03  373                          
"qca/nvm_%08x.bin", soc_ver);
4219d468 Balakrishna Godavarthi 2018-08-03  374  
ba493d4f Balakrishna Godavarthi 2018-08-03  375         err = 
qca_download_firmware(hdev, &config);
83e81961 Ben Young Tae Kim      2015-08-10  376         if (err < 0) {
ba493d4f Balakrishna Godavarthi 2018-08-03  377                 
bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
83e81961 Ben Young Tae Kim      2015-08-10  378                 return err;
83e81961 Ben Young Tae Kim      2015-08-10  379         }
83e81961 Ben Young Tae Kim      2015-08-10  380  
83e81961 Ben Young Tae Kim      2015-08-10  381         /* Perform HCI reset */
ba493d4f Balakrishna Godavarthi 2018-08-03  382         err = 
qca_send_reset(hdev);
83e81961 Ben Young Tae Kim      2015-08-10  383         if (err < 0) {
ba493d4f Balakrishna Godavarthi 2018-08-03  384                 
bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
83e81961 Ben Young Tae Kim      2015-08-10  385                 return err;
83e81961 Ben Young Tae Kim      2015-08-10  386         }
83e81961 Ben Young Tae Kim      2015-08-10  387  
ba493d4f Balakrishna Godavarthi 2018-08-03  388         bt_dev_info(hdev, "QCA 
setup on UART is completed");
83e81961 Ben Young Tae Kim      2015-08-10  389  
83e81961 Ben Young Tae Kim      2015-08-10  390         return 0;
83e81961 Ben Young Tae Kim      2015-08-10  391  }
ba493d4f Balakrishna Godavarthi 2018-08-03  392  
EXPORT_SYMBOL_GPL(qca_uart_setup);
83e81961 Ben Young Tae Kim      2015-08-10  393  

:::::: The code at line 369 was first introduced by commit
:::::: 4219d4686875fdd83df3da00fda5ff0551e0a2d7 Bluetooth: btqca: Add wcn3990 
firmware download support.

:::::: TO: Balakrishna Godavarthi <bgoda...@codeaurora.org>
:::::: CC: Marcel Holtmann <mar...@holtmann.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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