bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu1~1.1: bcmwl kernel module failed to build [wl_cfg80211_hybrid.c:1799:25: error: initialization from incompatible pointer type]

[Rajat Porwal]

IT just happens so that my wifi drivers never ever works with any linux distro at all...no matter how many times I try to fix it with the help of online ubuntu community.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu1~1.1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
DKMSKernelVersion: 4.15.0-20-generic
Date: Sun May 6 12:37:39 2018
DuplicateSignature: dkms:bcmwl-kernel-source:6.30.223.271+bdcom-0ubuntu1~1.1:/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.c:1799:25: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
InstallationDate: Installed on 2018-05-02 (3 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageVersion: 6.30.223.271+bdcom-0ubuntu1~1.1
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: bcmwl
Title: bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu1~1.1: bcmwl kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[GTech (gtechitsolutions)]

Below are the contents of the make.log file:

DKMS make.log for bcmwl-6.30.223.271+bdcom for kernel 4.15.0-29-generic (x86_64)
Sat Jul 28 22:27:42 WAT 2018
make: Entering directory '/usr/src/linux-headers-4.15.0-29-generic'
Makefile:976: "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel"
CFG80211 API is prefered for this kernel version
Using CFG80211 API
  CC [M] /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.o
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c: In function ‘osl_os_get_image_block’:
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:1083:26: warning: passing argument 2 of ‘kernel_read’ makes pointer from integer without a cast [-Wint-conversion]
  rdlen = kernel_read(fp, fp->f_pos, buf, len);
                          ^
In file included from ./include/linux/huge_mm.h:7:0,
                 from ./include/linux/mm.h:463,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/include/linuxver.h:65,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:25:
./include/linux/fs.h:2858:16: note: expected ‘void *’ but argument is of type ‘loff_t {aka long long int}’
 extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
                ^
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:1083:37: warning: passing argument 3 of ‘kernel_read’ makes integer from pointer without a cast [-Wint-conversion]
  rdlen = kernel_read(fp, fp->f_pos, buf, len);
                                     ^
In file included from ./include/linux/huge_mm.h:7:0,
                 from ./include/linux/mm.h:463,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/include/linuxver.h:65,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:25:
./include/linux/fs.h:2858:16: note: expected ‘size_t {aka long unsigned int}’ but argument is of type ‘char *’
 extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
                ^
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:1083:42: warning: passing argument 4 of ‘kernel_read’ makes pointer from integer without a cast [-Wint-conversion]
  rdlen = kernel_read(fp, fp->f_pos, buf, len);
                                          ^
In file included from ./include/linux/huge_mm.h:7:0,
                 from ./include/linux/mm.h:463,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/include/linuxver.h:65,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.c:25:
./include/linux/fs.h:2858:16: note: expected ‘loff_t * {aka long long int *}’ but argument is of type ‘int’
 extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
                ^
  CC [M] /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.o
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c: In function ‘wl_init_timer’:
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c:2359:2: error: implicit declaration of function ‘init_timer’ [-Werror=implicit-function-declaration]
 ...