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Short summary of fixes pull:

Browse Source 
* dma-buf: Fix a memory leak in CMAV heap
  * drm: Fix format check for legacy pageflips
  * ttm: Pass correct address to dma_mapping_error(); Use mutex in pool
    shrinker
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Merge tag 'drm-misc-fixes-2021-01-12' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Short summary of fixes pull:

 * dma-buf: Fix a memory leak in CMAV heap
 * drm: Fix format check for legacy pageflips
 * ttm: Pass correct address to dma_mapping_error(); Use mutex in pool
   shrinker

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/X/2iXO4ofFSZ39/v@linux-uq9g
This commit is contained in:
Dave Airlie 2021-01-15 10:16:40 +10:00
commit 61502e3bb9
3 changed files with 22 additions and 12 deletions
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3
drivers/dma-buf/heaps/cma_heap.c
View File

@ -251,6 +251,9 @@ static void cma_heap_dma_buf_release(struct dma_buf *dmabuf)
buffer->vaddr = NULL;
}
/* free page list */
kfree(buffer->pages);
/* release memory */
cma_release(cma_heap->cma, buffer->cma_pages, buffer->pagecount);
kfree(buffer);
}

9
drivers/gpu/drm/drm_plane.c
View File

@ -1163,7 +1163,14 @@ retry:
if (ret)
goto out;
if (old_fb->format != fb->format) {
/*
* Only check the FOURCC format code, excluding modifiers. This is
* enough for all legacy drivers. Atomic drivers have their own
* checks in their ->atomic_check implementation, which will
* return -EINVAL if any hw or driver constraint is violated due
* to modifier changes.
*/
if (old_fb->format->format != fb->format->format) {
DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
ret = -EINVAL;
goto out;

22
drivers/gpu/drm/ttm/ttm_pool.c
View File

@ -66,7 +66,7 @@ static struct ttm_pool_type global_uncached[MAX_ORDER];
static struct ttm_pool_type global_dma32_write_combined[MAX_ORDER];
static struct ttm_pool_type global_dma32_uncached[MAX_ORDER];
static spinlock_t shrinker_lock;
static struct mutex shrinker_lock;
static struct list_head shrinker_list;
static struct shrinker mm_shrinker;
@ -190,7 +190,7 @@ static int ttm_pool_map(struct ttm_pool *pool, unsigned int order,
size_t size = (1ULL << order) * PAGE_SIZE;
addr = dma_map_page(pool->dev, p, 0, size, DMA_BIDIRECTIONAL);
if (dma_mapping_error(pool->dev, **dma_addr))
if (dma_mapping_error(pool->dev, addr))
return -EFAULT;
}
@ -249,9 +249,9 @@ static void ttm_pool_type_init(struct ttm_pool_type *pt, struct ttm_pool *pool,
spin_lock_init(&pt->lock);
INIT_LIST_HEAD(&pt->pages);
spin_lock(&shrinker_lock);
mutex_lock(&shrinker_lock);
list_add_tail(&pt->shrinker_list, &shrinker_list);
spin_unlock(&shrinker_lock);
mutex_unlock(&shrinker_lock);
}
/* Remove a pool_type from the global shrinker list and free all pages */
@ -259,9 +259,9 @@ static void ttm_pool_type_fini(struct ttm_pool_type *pt)
{
struct page *p, *tmp;
spin_lock(&shrinker_lock);
mutex_lock(&shrinker_lock);
list_del(&pt->shrinker_list);
spin_unlock(&shrinker_lock);
mutex_unlock(&shrinker_lock);
list_for_each_entry_safe(p, tmp, &pt->pages, lru)
ttm_pool_free_page(pt->pool, pt->caching, pt->order, p);
@ -302,7 +302,7 @@ static unsigned int ttm_pool_shrink(void)
unsigned int num_freed;
struct page *p;
spin_lock(&shrinker_lock);
mutex_lock(&shrinker_lock);
pt = list_first_entry(&shrinker_list, typeof(*pt), shrinker_list);
p = ttm_pool_type_take(pt);
@ -314,7 +314,7 @@ static unsigned int ttm_pool_shrink(void)
}
list_move_tail(&pt->shrinker_list, &shrinker_list);
spin_unlock(&shrinker_lock);
mutex_unlock(&shrinker_lock);
return num_freed;
}
@ -564,7 +564,7 @@ int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m)
{
unsigned int i;
spin_lock(&shrinker_lock);
mutex_lock(&shrinker_lock);
seq_puts(m, "\t ");
for (i = 0; i < MAX_ORDER; ++i)
@ -600,7 +600,7 @@ int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m)
seq_printf(m, "\ntotal\t: %8lu of %8lu\n",
atomic_long_read(&allocated_pages), page_pool_size);
spin_unlock(&shrinker_lock);
mutex_unlock(&shrinker_lock);
return 0;
}
@ -644,7 +644,7 @@ int ttm_pool_mgr_init(unsigned long num_pages)
if (!page_pool_size)
page_pool_size = num_pages;
spin_lock_init(&shrinker_lock);
mutex_init(&shrinker_lock);
INIT_LIST_HEAD(&shrinker_list);
for (i = 0; i < MAX_ORDER; ++i) {