[media] DiBxxxx: get rid of DMA buffer on stack

This patch removes the remaining on-stack buffer for USB DMA transfer.
This patch also reduces the stack memory usage.

Cc: stable@kernel.org
Cc: Florian Mickler <florian@mickler.org>
Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr>
Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/dibx000_common.h b/drivers/media/dvb/frontends/dibx000_common.h
index 977d343369aa..f031165c0459 100644
--- a/drivers/media/dvb/frontends/dibx000_common.h
+++ b/drivers/media/dvb/frontends/dibx000_common.h
@@ -28,6 +28,11 @@ struct dibx000_i2c_master {
         u8 i2c_addr;
 
         u16 base_reg;
+
+        /* for the I2C transfer */
+        struct i2c_msg msg[34];
+        u8 i2c_write_buffer[8];
+        u8 i2c_read_buffer[2];
 };
 
 extern int dibx000_init_i2c_master(struct dibx000_i2c_master *mst,