diff options
| author |   Julian Wiedmann <jwi@linux.ibm.com> | 2020-04-09 09:59:39 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-04-28 13:49:47 +0200 |
| commit | 75e82bec6b2622c6f455b7a543fb5476a5d0eed7 (patch) | |
| tree | e086c6e28751dd91f291afcef2d8da1af1990ef3 /drivers/s390 | |
| parent | s390/qdio: tear down thinint indicator after early error (diff) | |
| download | linux-dev-75e82bec6b2622c6f455b7a543fb5476a5d0eed7.tar.xz linux-dev-75e82bec6b2622c6f455b7a543fb5476a5d0eed7.zip | |
s390/qdio: put thinint indicator after early error
qdio_establish() calls qdio_setup_thinint() via qdio_setup_irq().
If the subsequent qdio_establish_thinint() fails, we miss to put the
DSCI again. Thus the DSCI isn't available for re-use. Given enough of
such errors, we could end up with having only the shared DSCI available.
Merge qdio_setup_thinint() into qdio_establish_thinint(), and deal with
such an error internally.
Fixes: 779e6e1c724d ("[S390] qdio: new qdio driver.")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/qdio.h | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_setup.c | 1 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 14 |
3 files changed, 8 insertions, 8 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 3cf223bc1d5f..a2afd7bc100b 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -364,7 +364,6 @@ static inline int multicast_outbound(struct qdio_q *q) extern u64 last_ai_time; /* prototypes for thin interrupt */ -void qdio_setup_thinint(struct qdio_irq *irq_ptr); int qdio_establish_thinint(struct qdio_irq *irq_ptr); void qdio_shutdown_thinint(struct qdio_irq *irq_ptr); void tiqdio_add_device(struct qdio_irq *irq_ptr); diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index d12f094db056..8edfa0982221 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -480,7 +480,6 @@ int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data) } setup_qib(irq_ptr, init_data); - qdio_setup_thinint(irq_ptr); set_impl_params(irq_ptr, init_data->qib_param_field_format, init_data->qib_param_field, init_data->input_slib_elements, diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index ae50373617cd..0faa0ad21732 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -227,17 +227,19 @@ int __init tiqdio_register_thinints(void) int qdio_establish_thinint(struct qdio_irq *irq_ptr) { + int rc; + if (!is_thinint_irq(irq_ptr)) return 0; - return set_subchannel_ind(irq_ptr, 0); -} -void qdio_setup_thinint(struct qdio_irq *irq_ptr) -{ - if (!is_thinint_irq(irq_ptr)) - return; irq_ptr->dsci = get_indicator(); DBF_HEX(&irq_ptr->dsci, sizeof(void *)); + + rc = set_subchannel_ind(irq_ptr, 0); + if (rc) + put_indicator(irq_ptr->dsci); + + return rc; } void qdio_shutdown_thinint(struct qdio_irq *irq_ptr) |