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

[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>

1 files changed, 17 insertions, 8 deletions

diff --git a/drivers/staging/media/solo6x10/solo6x10-disp.c b/drivers/staging/media/solo6x10/solo6x10-disp.c
index 32d9953bc36e..145295a5db72 100644
--- a/drivers/staging/media/solo6x10/solo6x10-disp.c
+++ b/drivers/staging/media/solo6x10/solo6x10-disp.c
@@ -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,
                                u16 val, int reg_size)
 {
-        u16 buf[64];
-        int i;
-        int ret = 0;
+        u16 *buf;
+        const int n = 64, size = n * sizeof(*buf);
+        int i, ret = 0;
+
+        buf = kmalloc(size, GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
 
-        for (i = 0; i < sizeof(buf) >> 1; i++)
+        for (i = 0; i < n; i++)
                 buf[i] = cpu_to_le16(val);
 
-        for (i = 0; i < reg_size; i += sizeof(buf))
-                ret |= solo_p2m_dma(solo_dev, 1, buf,
-                                    SOLO_MOTION_EXT_ADDR(solo_dev) + off + i,
-                                    sizeof(buf), 0, 0);
+        for (i = 0; i < reg_size; i += size) {
+                ret = solo_p2m_dma(solo_dev, 1, buf,
+                                   SOLO_MOTION_EXT_ADDR(solo_dev) + off + i,
+                                   size, 0, 0);
+
+                if (ret)
+                        break;
+        }
 
+        kfree(buf);
         return ret;
 }