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make 2.4.2 -> 2.4.3 change conditional. works with older than 2.4.3 kernels

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again.
This commit is contained in:
Alan Hourihane 2001-04-03 07:50:30 +00:00
parent 62d4931529
commit 4259e5e617
2 changed files with 32 additions and 0 deletions
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16
linux-core/drm_bufs.c
View file

@ -768,18 +768,34 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp,
goto done;
}
#if LINUX_VERSION_CODE < 0x020402
down( &current->mm->mmap_sem );
#else
down_write( &current->mm->mmap_sem );
#endif
virtual = do_mmap( filp, 0, map->size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
(unsigned long)map->offset );
#if LINUX_VERSION_CODE < 0x020402
up( &current->mm->mmap_sem );
#else
up_write( &current->mm->mmap_sem );
#endif
} else {
#if LINUX_VERSION_CODE < 0x020402
down( &current->mm->mmap_sem );
#else
down_write( &current->mm->mmap_sem );
#endif
virtual = do_mmap( filp, 0, dma->byte_count,
PROT_READ | PROT_WRITE,
MAP_SHARED, 0 );
#if LINUX_VERSION_CODE < 0x020402
up( &current->mm->mmap_sem );
#else
up_write( &current->mm->mmap_sem );
#endif
}
if ( virtual > -1024UL ) {
/* Real error */

16
linux/drm_bufs.h
View file

@ -768,18 +768,34 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp,
goto done;
}
#if LINUX_VERSION_CODE < 0x020402
down( &current->mm->mmap_sem );
#else
down_write( &current->mm->mmap_sem );
#endif
virtual = do_mmap( filp, 0, map->size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
(unsigned long)map->offset );
#if LINUX_VERSION_CODE < 0x020402
up( &current->mm->mmap_sem );
#else
up_write( &current->mm->mmap_sem );
#endif
} else {
#if LINUX_VERSION_CODE < 0x020402
down( &current->mm->mmap_sem );
#else
down_write( &current->mm->mmap_sem );
#endif
virtual = do_mmap( filp, 0, dma->byte_count,
PROT_READ | PROT_WRITE,
MAP_SHARED, 0 );
#if LINUX_VERSION_CODE < 0x020402
up( &current->mm->mmap_sem );
#else
up_write( &current->mm->mmap_sem );
#endif
}
if ( virtual > -1024UL ) {
/* Real error */