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s390/cmma: reuse kstrtobool for option value parsing

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"cmma" option setup already recognises some textual values. Yet kstrtobool
is a more common way to parse boolean values, reuse it to unify option
value parsing behavior and simplify code a bit.

While at it, __setup value parsing callbacks are expected to return
1 when an option is recognized, and returning any other value won't
trigger any error message currently, so simply return 1.

Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-08-19 17:55:44 +02:00
parent 3d64436453
commit 5f0917a281
1 changed files with 4 additions and 10 deletions
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12
arch/s390/mm/page-states.c
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@ -21,18 +21,12 @@ static int cmma_flag = 1;
static int __init cmma(char *str)
{
char *parm;
bool enabled;
parm = strstrip(str);
if (strcmp(parm, "yes") == 0 || strcmp(parm, "on") == 0) {
cmma_flag = 1;
if (!kstrtobool(str, &enabled))
cmma_flag = enabled;
return 1;
}
cmma_flag = 0;
if (strcmp(parm, "no") == 0 || strcmp(parm, "off") == 0)
return 1;
return 0;
}
__setup("cmma=", cmma);
static inline int cmma_test_essa(void)