[crystalhd-kmod] Add crystalhd-kmod-mmap_sem patch

commit 9c3879c6568bc7bf5efecc12e5180c2092102123 Author: Nicolas Chauvet <kwizart(a)gmail.com&gt; Date: Fri Feb 5 20:22:54 2021 +0100 Add crystalhd-kmod-mmap_sem patch crystalhd-kmod-mmap_sem.patch | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) --- diff --git a/crystalhd-kmod-mmap_sem.patch b/crystalhd-kmod-mmap_sem.patch new file mode 100644 index 0000000..eb6015f --- /dev/null +++ b/crystalhd-kmod-mmap_sem.patch @@ -0,0 +1,24 @@ +diff -up crystalhd-kmod-20170515/drivers/staging/crystalhd/crystalhd_misc.c.mmap_sem crystalhd-kmod-20170515/drivers/staging/crystalhd/crystalhd_misc.c +--- crystalhd-kmod-20170515/drivers/staging/crystalhd/crystalhd_misc.c.mmap_sem 2017-05-18 00:37:21.000000000 +0200 ++++ crystalhd-kmod-20170515/drivers/staging/crystalhd/crystalhd_misc.c 2021-02-05 19:05:12.932510158 +0100 +@@ -644,12 +644,20 @@ BC_STATUS crystalhd_map_dio(struct cryst + } + } + ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0) ++ mmap_read_lock(current_task->mm); ++#else + down_read(&current->mm->mmap_sem); ++#endif + + res = get_user_pages(uaddr, nr_pages, rw == READ ? FOLL_WRITE : 0, + dio->pages, NULL); + ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0) ++ mmap_read_unlock(current_task->mm); ++#else + up_read(&current->mm->mmap_sem); ++#endif + + /* Save for release..*/ + dio->sig = crystalhd_dio_locked;