root@*/Desktop/BIT/pm_pcie_driver# make
make -C /lib/modules/4.18.0-15-generic/build SUBDIRS=/home/tr44/Desktop/BIT/pm_pcie_driver modules
make[1]: Entering directory '/usr/src/linux-headers-4.18.0-15-generic'
  CC [M]  /home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.o
/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.c: In function ‘char_dev_read’:
/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.c:422:11: error: implicit declaration of function ‘copy_to_user’; did you mean ‘raw_copy_to_user’? [-Werror=implicit-function-declaration]
  nbytes = copy_to_user(buf, res->addr_rd, res->currentConfig.xferBufferSize);
           ^~~~~~~~~~~~
           raw_copy_to_user
/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.c: In function ‘char_dev_write’:
/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.c:740:11: error: implicit declaration of function ‘copy_from_user’; did you mean ‘raw_copy_from_user’? [-Werror=implicit-function-declaration]
  nbytes = copy_from_user(res->addr_wr,  buf, lbuf );
           ^~~~~~~~~~~~~~
           raw_copy_from_user
In file included from /home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.c:25:0:
At top level:
/home/tr44/Desktop/BIT/pm_pcie_driver/pcie_common.h:115:16: warning: ‘ADCGain’ defined but not used [-Wunused-variable]
 static  double ADCGain[6][2] = {
                ^~~~~~~
cc1: some warnings being treated as errors
scripts/Makefile.build:332: recipe for target '/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.o' failed
make[2]: *** [/home/tr44/Desktop/BIT/pm_pcie_driver/pm_pcie_driver.o] Error 1
Makefile:1534: recipe for target '_module_/home/tr44/Desktop/BIT/pm_pcie_driver' failed
make[1]: *** [_module_/home/tr44/Desktop/BIT/pm_pcie_driver] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.18.0-15-generic'
Makefile:14: recipe for target 'default' failed
make: *** [default] Error 2
root@*/Desktop/BIT/pm_pcie_driver#