diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2021-05-31 18:38:04 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-07-27 10:39:18 +0300 |
| commit | d06314e0ce20398a0505e42041155d550e70a918 (patch) | |
| tree | 512671eb562e3e6994b88f600fc3eef228691951 /drivers/s390/cio | |
| parent | 1c1dc8bda3a05c60877a6649775894db5343bdea (diff) | |
| download | linux-d06314e0ce20398a0505e42041155d550e70a918.tar.xz | |
s390/qdio: improve roll-back after error on ESTABLISH ccw
If the ESTABLISH ccw fails (ie. the qdio_irq is set to
QDIO_IRQ_STATE_ERR), we don't need to call qdio_shutdown() for rolling
back our earlier actions. All the needed logic is already available in
qdio_establish()'s error chain, and using it means we don't have to
temporarily drop the setup_mutex either.
This makes qdio_shutdown() a purely external function, that should only
be called by the driver if an earlier qdio_establish() succeeded.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 3567912440dc..167653037b52 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -1148,9 +1148,8 @@ int qdio_establish(struct ccw_device *cdev, } if (irq_ptr->state != QDIO_IRQ_STATE_ESTABLISHED) { - mutex_unlock(&irq_ptr->setup_mutex); - qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); - return -EIO; + rc = -EIO; + goto err_ccw_error; } qdio_setup_ssqd_info(irq_ptr); @@ -1165,6 +1164,7 @@ int qdio_establish(struct ccw_device *cdev, err_ccw_timeout: qdio_cancel_ccw(irq_ptr, QDIO_FLAG_CLEANUP_USING_CLEAR); +err_ccw_error: err_ccw_start: qdio_shutdown_thinint(irq_ptr); err_thinint: |