[LTP] [PATCH] block/ltp_block_dev.c: Update tests for the newer kernel

[Petr Vorel <pvorel@suse.cz>]

Hi Xiao,

...
> +++ b/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
> @@ -52,7 +52,8 @@ MODULE_LICENSE("GPL");
>   *             |--------------------------+---------+-------------
>   *             | [1..255]                 | valid   | tc03
>   *             |--------------------------+---------+-------------
> - *             | [256..UINT_MAX]          | valid   | tc04, tc05
> + *             | [256..511]               | valid   | tc04
> + *             | [512..UINT_MAX]          | invalid | tc05
>   *  -----------+--------------------------+---------+-------------
>   *  name       | [valid pointer to a zero |         |
>   *             |  terminated string]      | valid   | tc01, tc02
> @@ -205,17 +206,24 @@ static int tc03(void)
>  static int tc04(void)
>  {
>  	int major, pass = 8;
> +	unsigned int i, test_major[2] = {256, 511};

> -	prk_info("Test Case 4: register_blkdev() with major=256\n");
> +	prk_info("Test Case 4: register_blkdev() with major=256/511\n");
Could we use test_major[0] and test_major[1] here?

> -	major = register_blkdev(256, BLK_DEV_NAME);
> -	prk_debug("major = %i\n", major);
> +	for (i = 0; i < sizeof(test_major) / sizeof(unsigned int); i++) {
> +		major = register_blkdev(test_major[i], BLK_DEV_NAME);
> +		prk_debug("major = %i\n", major);

> -	if (major == 0) {
> -		unregister_blkdev(256, BLK_DEV_NAME);
> -	} else {
> -		pass = 0;
> -		prk_debug("register_blkdev() failed with error %i\n", major);
> +		if (major == 0) {
> +			unregister_blkdev(test_major[i], BLK_DEV_NAME);
> +		} else if (major == -EBUSY) {
> +			prk_debug("device was busy, register_blkdev() with "
> +				  "major %u skipped\n", test_major[i]);
> +		} else {
> +			pass = 0;
> +			prk_debug("register_blkdev() with major %u got "
> +				  "error %i\n", test_major[i], major);
> +		}
>  	}

>  	prk_info("Test Case Result: %s\n", result_str(pass));
> @@ -225,18 +233,21 @@ static int tc04(void)
>  static int tc05(void)
>  {
>  	int major, pass = 16;
> +	unsigned int i, test_major[2] = {512, UINT_MAX};

> -	prk_info("Test Case 5: register_blkdev() with major=%u\n", UINT_MAX);
> +	prk_info("Test Case 5: register_blkdev() with major=512/%u\n", UINT_MAX);

> -	major = register_blkdev(UINT_MAX, BLK_DEV_NAME);
> -	prk_debug("major = %i\n", major);
> +	for (i = 0; i < sizeof(test_major) / sizeof(unsigned int); i++) {
> +		major = register_blkdev(test_major[i], BLK_DEV_NAME);
> +		prk_debug("major = %i\n", major);

> -	if (major == 0) {
> -		unregister_blkdev(UINT_MAX, BLK_DEV_NAME);
> -	} else {
> -		prk_debug("reg blkdev with major %d failed with error %i\n",
> -			UINT_MAX, major);
> -		pass = 0;
> +		if (major >= 0) {
> +			unregister_blkdev(test_major[i], BLK_DEV_NAME);
> +			pass = 0;
> +		} else {
> +			prk_debug("register_blkdev() with major %u got "
> +				  "error %i\n", test_major[i], major);
I'd prefer to have string on a single line.

+ I'd replace licence info at the top with SPDX-License-Identifier.

Otherwise it looks good to me.

Kind regards,
Petr