[LTP] [PATCH] block/ltp_block_dev.c: Fix error on older distributions

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

Hi Jinhui,

It looks good to me. :-)
Reviewed-by: Xiao Yang <yangx.jy@cn.fujitsu.com>

Best Regards,
Xiao Yang
On 2019/03/11 11:21, Jinhui huang wrote:
> major number was limited to 511(i.e. BLKDEV_MAJOR_MAX - 1) by commit 133d55c
> since kernel v4.14 so that register_blkdev() with a major number gather than
> 511 got failure on older distributions.  It's just a change of limit rather
> than bug fix so we want to accept both of results on all kernels.
>
> Fixes: 8d19ee6 ("block/ltp_block_dev.c: Update tests for the newer kernel")
>
> Signed-off-by: Jinhui huang <huangjh.jy@cn.fujitsu.com>
> ---
>  .../kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c     | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c b/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
> index b0f6ce5..c7c8683 100644
> --- a/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
> +++ b/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
> @@ -232,10 +232,15 @@ static int tc05(void)
>  
>  		if (major == 0) {
>  			unregister_blkdev(test_major[i], BLK_DEV_NAME);
> +#ifdef BLKDEV_MAJOR_MAX
>  			pass = 0;
> +#endif
>  		} else {
>  			prk_debug("register_blkdev() with major %u got error %i\n",
>  				  test_major[i], major);
> +#ifndef BLKDEV_MAJOR_MAX
> +			pass = 0;
> +#endif
>  		}
>  	}
>