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authorDavid S. Miller <davem@davemloft.net>2018-05-21 23:01:54 +0300
committerDavid S. Miller <davem@davemloft.net>2018-05-21 23:01:54 +0300
commit6f6e434aa267a6030477876d89444fe3a6b7a48d (patch)
tree67755c422f1e85451aa646eae21d4c6f3f389d9f /drivers/s390
parent44c752fe584d8b9f6e0756ecffa8691677471862 (diff)
parent6741c4bb389da103c0d79ad1961884628900bfe6 (diff)
downloadlinux-6f6e434aa267a6030477876d89444fe3a6b7a48d.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
S390 bpf_jit.S is removed in net-next and had changes in 'net', since that code isn't used any more take the removal. TLS data structures split the TX and RX components in 'net-next', put the new struct members from the bug fix in 'net' into the RX part. The 'net-next' tree had some reworking of how the ERSPAN code works in the GRE tunneling code, overlapping with a one-line headroom calculation fix in 'net'. Overlapping changes in __sock_map_ctx_update_elem(), keep the bits that read the prog members via READ_ONCE() into local variables before using them. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/qdio_setup.c12
-rw-r--r--drivers/s390/cio/vfio_ccw_cp.c13
2 files changed, 15 insertions, 10 deletions
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 439991d71b14..4c14ce428e92 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -141,7 +141,7 @@ static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
int i;
for (i = 0; i < nr_queues; i++) {
- q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
+ q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL);
if (!q)
return -ENOMEM;
@@ -456,7 +456,6 @@ int qdio_setup_irq(struct qdio_initialize *init_data)
{
struct ciw *ciw;
struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
- int rc;
memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib));
memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
@@ -493,16 +492,14 @@ int qdio_setup_irq(struct qdio_initialize *init_data)
ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
if (!ciw) {
DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
- rc = -EINVAL;
- goto out_err;
+ return -EINVAL;
}
irq_ptr->equeue = *ciw;
ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
if (!ciw) {
DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
- rc = -EINVAL;
- goto out_err;
+ return -EINVAL;
}
irq_ptr->aqueue = *ciw;
@@ -512,9 +509,6 @@ int qdio_setup_irq(struct qdio_initialize *init_data)
init_data->cdev->handler = qdio_int_handler;
spin_unlock_irq(get_ccwdev_lock(irq_ptr->cdev));
return 0;
-out_err:
- qdio_release_memory(irq_ptr);
- return rc;
}
void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 2c7550797ec2..dce92b2a895d 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -715,6 +715,10 @@ void cp_free(struct channel_program *cp)
* and stores the result to ccwchain list. @cp must have been
* initialized by a previous call with cp_init(). Otherwise, undefined
* behavior occurs.
+ * For each chain composing the channel program:
+ * - On entry ch_len holds the count of CCWs to be translated.
+ * - On exit ch_len is adjusted to the count of successfully translated CCWs.
+ * This allows cp_free to find in ch_len the count of CCWs to free in a chain.
*
* The S/390 CCW Translation APIS (prefixed by 'cp_') are introduced
* as helpers to do ccw chain translation inside the kernel. Basically
@@ -749,11 +753,18 @@ int cp_prefetch(struct channel_program *cp)
for (idx = 0; idx < len; idx++) {
ret = ccwchain_fetch_one(chain, idx, cp);
if (ret)
- return ret;
+ goto out_err;
}
}
return 0;
+out_err:
+ /* Only cleanup the chain elements that were actually translated. */
+ chain->ch_len = idx;
+ list_for_each_entry_continue(chain, &cp->ccwchain_list, next) {
+ chain->ch_len = 0;
+ }
+ return ret;
}
/**