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s390/cio: Refactor the routine that handles TIC CCWs 

Extract the "does the target of this TIC already exist?" check from
ccwchain_handle_tic(), so that it's easier to refactor that function
into one that cp_init() is able to use.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20190606202831.44135-3-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Eric Farman 2019-06-06 22:28:24 +02:00 committed by Cornelia Huck
parent 812271b910
commit e64bd68946
1 changed files with 4 additions and 4 deletions
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8
drivers/s390/cio/vfio_ccw_cp.c
View File

@ -502,10 +502,6 @@ static int ccwchain_handle_tic(struct ccw1 *tic, struct channel_program *cp)
struct ccwchain *chain;
int len, ret;
/* May transfer to an existing chain. */
if (tic_target_chain_exists(tic, cp))
return 0;
/* Get chain length. */
len = ccwchain_calc_length(tic->cda, cp);
if (len < 0)
@ -540,6 +536,10 @@ static int ccwchain_loop_tic(struct ccwchain *chain, struct channel_program *cp)
if (!ccw_is_tic(tic))
continue;
/* May transfer to an existing chain. */
if (tic_target_chain_exists(tic, cp))
continue;
ret = ccwchain_handle_tic(tic, cp);
if (ret)
return ret;