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authorLinus Torvalds <torvalds@linux-foundation.org>2017-12-31 10:48:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-12-31 10:48:09 -0800
commit29a9b0008d5ddbea8a6dcfd5aecc866585f6048e (patch)
tree84a6380629804eacf37f3d470c2ab6d2f62d5dfd /drivers
parentbc7236fbb864ff4bc41416ad45e997cc7f05f64e (diff)
parentd6b246bb7a29703f53aa4c050b8b3205d749caee (diff)
Merge tag 'staging-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg KH: "Here are three staging driver fixes for 4.15-rc6 The first resolves a bug in the lustre driver that came about due to a broken cleanup patch, due to crazy list usage in that codebase. The remaining two are ion driver fixes, finally getting the CMA interaction to work properly, resolving two regressions in that area of the code. All have been in linux-next with no reported issues for a while" * tag 'staging-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device staging: ion: Fix ion_cma_heap allocations staging: lustre: lnet: Fix recent breakage from list_for_each conversion
Diffstat (limited to 'drivers')
-rw-r--r--drivers/staging/android/ion/Kconfig2
-rw-r--r--drivers/staging/android/ion/ion.c4
-rw-r--r--drivers/staging/android/ion/ion_cma_heap.c15
-rw-r--r--drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c23
4 files changed, 24 insertions, 20 deletions
diff --git a/drivers/staging/android/ion/Kconfig b/drivers/staging/android/ion/Kconfig
index a517b2d29f1b..8f6494158d3d 100644
--- a/drivers/staging/android/ion/Kconfig
+++ b/drivers/staging/android/ion/Kconfig
@@ -37,7 +37,7 @@ config ION_CHUNK_HEAP
config ION_CMA_HEAP
bool "Ion CMA heap support"
- depends on ION && CMA
+ depends on ION && DMA_CMA
help
Choose this option to enable CMA heaps with Ion. This heap is backed
by the Contiguous Memory Allocator (CMA). If your system has these
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index a7d9b0e98572..f480885e346b 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -346,7 +346,7 @@ static int ion_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
mutex_lock(&buffer->lock);
list_for_each_entry(a, &buffer->attachments, list) {
dma_sync_sg_for_cpu(a->dev, a->table->sgl, a->table->nents,
- DMA_BIDIRECTIONAL);
+ direction);
}
mutex_unlock(&buffer->lock);
@@ -368,7 +368,7 @@ static int ion_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
mutex_lock(&buffer->lock);
list_for_each_entry(a, &buffer->attachments, list) {
dma_sync_sg_for_device(a->dev, a->table->sgl, a->table->nents,
- DMA_BIDIRECTIONAL);
+ direction);
}
mutex_unlock(&buffer->lock);
diff --git a/drivers/staging/android/ion/ion_cma_heap.c b/drivers/staging/android/ion/ion_cma_heap.c
index dd5545d9990a..86196ffd2faf 100644
--- a/drivers/staging/android/ion/ion_cma_heap.c
+++ b/drivers/staging/android/ion/ion_cma_heap.c
@@ -39,9 +39,15 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer,
struct ion_cma_heap *cma_heap = to_cma_heap(heap);
struct sg_table *table;
struct page *pages;
+ unsigned long size = PAGE_ALIGN(len);
+ unsigned long nr_pages = size >> PAGE_SHIFT;
+ unsigned long align = get_order(size);
int ret;
- pages = cma_alloc(cma_heap->cma, len, 0, GFP_KERNEL);
+ if (align > CONFIG_CMA_ALIGNMENT)
+ align = CONFIG_CMA_ALIGNMENT;
+
+ pages = cma_alloc(cma_heap->cma, nr_pages, align, GFP_KERNEL);
if (!pages)
return -ENOMEM;
@@ -53,7 +59,7 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer,
if (ret)
goto free_mem;
- sg_set_page(table->sgl, pages, len, 0);
+ sg_set_page(table->sgl, pages, size, 0);
buffer->priv_virt = pages;
buffer->sg_table = table;
@@ -62,7 +68,7 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer,
free_mem:
kfree(table);
err:
- cma_release(cma_heap->cma, pages, buffer->size);
+ cma_release(cma_heap->cma, pages, nr_pages);
return -ENOMEM;
}
@@ -70,9 +76,10 @@ static void ion_cma_free(struct ion_buffer *buffer)
{
struct ion_cma_heap *cma_heap = to_cma_heap(buffer->heap);
struct page *pages = buffer->priv_virt;
+ unsigned long nr_pages = PAGE_ALIGN(buffer->size) >> PAGE_SHIFT;
/* release memory */
- cma_release(cma_heap->cma, pages, buffer->size);
+ cma_release(cma_heap->cma, pages, nr_pages);
/* release sg table */
sg_free_table(buffer->sg_table);
kfree(buffer->sg_table);
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index 986c2a40d978..8267119ccc8e 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -487,21 +487,18 @@ ksocknal_add_peer(struct lnet_ni *ni, struct lnet_process_id id, __u32 ipaddr,
ksocknal_nid2peerlist(id.nid));
}
- route2 = NULL;
list_for_each_entry(route2, &peer->ksnp_routes, ksnr_list) {
- if (route2->ksnr_ipaddr == ipaddr)
- break;
-
- route2 = NULL;
- }
- if (!route2) {
- ksocknal_add_route_locked(peer, route);
- route->ksnr_share_count++;
- } else {
- ksocknal_route_decref(route);
- route2->ksnr_share_count++;
+ if (route2->ksnr_ipaddr == ipaddr) {
+ /* Route already exists, use the old one */
+ ksocknal_route_decref(route);
+ route2->ksnr_share_count++;
+ goto out;
+ }
}
-
+ /* Route doesn't already exist, add the new one */
+ ksocknal_add_route_locked(peer, route);
+ route->ksnr_share_count++;
+out:
write_unlock_bh(&ksocknal_data.ksnd_global_lock);
return 0;

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