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gbefb: switch to managed version of the DMA allocator

Browse source 
gbefb uses managed resources, so it should do the same for DMA
allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This commit is contained in:
Christoph Hellwig 2018-12-21 14:42:27 +01:00
parent 12a7b035ca
commit 9f989e8c06
1 changed files with 8 additions and 16 deletions
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24
drivers/video/fbdev/gbefb.c
View file

@ -1162,9 +1162,9 @@ static int gbefb_probe(struct platform_device *p_dev)
}
gbe_revision = gbe->ctrlstat & 15;
gbe_tiles.cpu =
dma_alloc_coherent(NULL, GBE_TLB_SIZE * sizeof(uint16_t),
&gbe_tiles.dma, GFP_KERNEL);
gbe_tiles.cpu = dmam_alloc_coherent(&p_dev->dev,
GBE_TLB_SIZE * sizeof(uint16_t),
&gbe_tiles.dma, GFP_KERNEL);
if (!gbe_tiles.cpu) {
printk(KERN_ERR "gbefb: couldn't allocate tiles table\n");
ret = -ENOMEM;
@ -1178,19 +1178,20 @@ static int gbefb_probe(struct platform_device *p_dev)
if (!gbe_mem) {
printk(KERN_ERR "gbefb: couldn't map framebuffer\n");
ret = -ENOMEM;
goto out_tiles_free;
goto out_release_mem_region;
}
gbe_dma_addr = 0;
} else {
/* try to allocate memory with the classical allocator
* this has high chance to fail on low memory machines */
gbe_mem = dma_alloc_wc(NULL, gbe_mem_size, &gbe_dma_addr,
GFP_KERNEL);
gbe_mem = dmam_alloc_attrs(&p_dev->dev, gbe_mem_size,
&gbe_dma_addr, GFP_KERNEL,
DMA_ATTR_WRITE_COMBINE);
if (!gbe_mem) {
printk(KERN_ERR "gbefb: couldn't allocate framebuffer memory\n");
ret = -ENOMEM;
goto out_tiles_free;
goto out_release_mem_region;
}
gbe_mem_phys = (unsigned long) gbe_dma_addr;
@ -1237,11 +1238,6 @@ static int gbefb_probe(struct platform_device *p_dev)
out_gbe_unmap:
arch_phys_wc_del(par->wc_cookie);
if (gbe_dma_addr)
dma_free_wc(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys);
out_tiles_free:
dma_free_coherent(NULL, GBE_TLB_SIZE * sizeof(uint16_t),
(void *)gbe_tiles.cpu, gbe_tiles.dma);
out_release_mem_region:
release_mem_region(GBE_BASE, sizeof(struct sgi_gbe));
out_release_framebuffer:
@ -1258,10 +1254,6 @@ static int gbefb_remove(struct platform_device* p_dev)
unregister_framebuffer(info);
gbe_turn_off();
arch_phys_wc_del(par->wc_cookie);
if (gbe_dma_addr)
dma_free_wc(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys);
dma_free_coherent(NULL, GBE_TLB_SIZE * sizeof(uint16_t),
(void *)gbe_tiles.cpu, gbe_tiles.dma);
release_mem_region(GBE_BASE, sizeof(struct sgi_gbe));
gbefb_remove_sysfs(&p_dev->dev);
framebuffer_release(info);