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s390/cio: de-duplicate subchannel validation

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cio_validate_io_subchannel() and cio_validate_msg_subchannel() are
identical, as the called functions already take care about the
differences between subchannel types.

Just inline the code into the only user,
cio_validate_subchannel(), instead.

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Pierre Morel 2015-10-26 11:13:18 +01:00 committed by Martin Schwidefsky
parent 8f0ba83178
commit e510f681d2
1 changed files with 4 additions and 23 deletions
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27
drivers/s390/cio/cio.c
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@ -476,26 +476,6 @@ static int cio_check_devno_blacklisted(struct subchannel *sch)
return 0;
}
static int cio_validate_io_subchannel(struct subchannel *sch)
{
/* Initialization for io subchannels. */
if (!css_sch_is_valid(&sch->schib))
return -ENODEV;
/* Devno is valid. */
return cio_check_devno_blacklisted(sch);
}
static int cio_validate_msg_subchannel(struct subchannel *sch)
{
/* Initialization for message subchannels. */
if (!css_sch_is_valid(&sch->schib))
return -ENODEV;
/* Devno is valid. */
return cio_check_devno_blacklisted(sch);
}
/**
* cio_validate_subchannel - basic validation of subchannel
* @sch: subchannel structure to be filled out
@ -533,10 +513,11 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid)
switch (sch->st) {
case SUBCHANNEL_TYPE_IO:
err = cio_validate_io_subchannel(sch);
break;
case SUBCHANNEL_TYPE_MSG:
err = cio_validate_msg_subchannel(sch);
if (!css_sch_is_valid(&sch->schib))
err = -ENODEV;
else
err = cio_check_devno_blacklisted(sch);
break;
default:
err = 0;