diff options
Diffstat (limited to 'drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c')
| -rw-r--r-- | drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c index d04db3f55519..0159ca4407d8 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c @@ -153,7 +153,6 @@ int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state) MAX_FRAGMENTS; g_fragments_base = (char *)slot_mem + slot_mem_size; - slot_mem_size += frag_mem_size; g_free_fragments = g_fragments_base; for (i = 0; i < (MAX_FRAGMENTS - 1); i++) { @@ -365,7 +364,7 @@ vchiq_doorbell_irq(int irq, void *dev_id) } static void -cleaup_pagelistinfo(struct vchiq_pagelist_info *pagelistinfo) +cleanup_pagelistinfo(struct vchiq_pagelist_info *pagelistinfo) { if (pagelistinfo->scatterlist_mapped) { dma_unmap_sg(g_dev, pagelistinfo->scatterlist, @@ -460,6 +459,11 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, PAGE_SIZE)); size_t bytes = PAGE_SIZE - off; + if (!pg) { + cleanup_pagelistinfo(pagelistinfo); + return NULL; + } + if (bytes > length) bytes = length; pages[actual_pages] = pg; @@ -470,7 +474,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, } else { down_read(&task->mm->mmap_sem); actual_pages = get_user_pages( - (unsigned long)buf & ~(PAGE_SIZE - 1), + (unsigned long)buf & PAGE_MASK, num_pages, (type == PAGELIST_READ) ? FOLL_WRITE : 0, pages, @@ -489,7 +493,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, actual_pages--; put_page(pages[actual_pages]); } - cleaup_pagelistinfo(pagelistinfo); + cleanup_pagelistinfo(pagelistinfo); return NULL; } /* release user pages */ @@ -518,7 +522,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, pagelistinfo->dma_dir); if (dma_buffers == 0) { - cleaup_pagelistinfo(pagelistinfo); + cleanup_pagelistinfo(pagelistinfo); return NULL; } @@ -555,7 +559,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, char *fragments; if (down_interruptible(&g_free_fragments_sema) != 0) { - cleaup_pagelistinfo(pagelistinfo); + cleanup_pagelistinfo(pagelistinfo); return NULL; } @@ -577,7 +581,6 @@ static void free_pagelist(struct vchiq_pagelist_info *pagelistinfo, int actual) { - unsigned int i; PAGELIST_T *pagelist = pagelistinfo->pagelist; struct page **pages = pagelistinfo->pages; unsigned int num_pages = pagelistinfo->num_pages; @@ -633,9 +636,11 @@ free_pagelist(struct vchiq_pagelist_info *pagelistinfo, /* Need to mark all the pages dirty. */ if (pagelist->type != PAGELIST_WRITE && pagelistinfo->pages_need_release) { + unsigned int i; + for (i = 0; i < num_pages; i++) set_page_dirty(pages[i]); } - cleaup_pagelistinfo(pagelistinfo); + cleanup_pagelistinfo(pagelistinfo); } |