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[media] SOLO6x10: don't do DMA from stack in solo_dma_vin_region()

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[m.chehab@samsung.com: Fix CodingStyle: don't use 2 statements on just one line]

Signed-off-by: Krzysztof Ha?asa <khalasa@piap.pl>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Krzysztof Hałasa 2013-09-12 08:25:36 -03:00 committed by Mauro Carvalho Chehab
parent b5c2e0abe1
commit 4518274606
1 changed files with 17 additions and 8 deletions
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25
drivers/staging/media/solo6x10/solo6x10-disp.c
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@ -176,18 +176,27 @@ static void solo_vout_config(struct solo_dev *solo_dev)
static int solo_dma_vin_region(struct solo_dev *solo_dev, u32 off, static int solo_dma_vin_region(struct solo_dev *solo_dev, u32 off,
u16 val, int reg_size) u16 val, int reg_size)
{ {
u16 buf[64]; u16 *buf;
int i; const int n = 64, size = n * sizeof(*buf);
int ret = 0; int i, ret = 0;
for (i = 0; i < sizeof(buf) >> 1; i++) buf = kmalloc(size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
for (i = 0; i < n; i++)
buf[i] = cpu_to_le16(val); buf[i] = cpu_to_le16(val);
for (i = 0; i < reg_size; i += sizeof(buf)) for (i = 0; i < reg_size; i += size) {
ret |= solo_p2m_dma(solo_dev, 1, buf, ret = solo_p2m_dma(solo_dev, 1, buf,
SOLO_MOTION_EXT_ADDR(solo_dev) + off + i, SOLO_MOTION_EXT_ADDR(solo_dev) + off + i,
sizeof(buf), 0, 0); size, 0, 0);
if (ret)
break;
}
kfree(buf);
return ret; return ret;
} }