From 9ad46a6ac5422882d9f9a7f0d77ca0766f56bb6e Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 23 May 2008 23:58:24 +0100 Subject: cx25840: treat firmware data as const Signed-off-by: David Woodhouse Acked-by: Hans Verkuil Acked-by: Tyler Trafford Acked-by: Mike Isely --- drivers/media/video/cx25840/cx25840-firmware.c | 27 +++++++++++--------------- 1 file changed, 11 insertions(+), 16 deletions(-) (limited to 'drivers/media/video/cx25840/cx25840-firmware.c') diff --git a/drivers/media/video/cx25840/cx25840-firmware.c b/drivers/media/video/cx25840/cx25840-firmware.c index 620d295947a..8d489a4b957 100644 --- a/drivers/media/video/cx25840/cx25840-firmware.c +++ b/drivers/media/video/cx25840/cx25840-firmware.c @@ -79,7 +79,7 @@ static int check_fw_load(struct i2c_client *client, int size) return 0; } -static int fw_write(struct i2c_client *client, u8 *data, int size) +static int fw_write(struct i2c_client *client, const u8 *data, int size) { if (i2c_master_send(client, data, size) < size) { v4l_err(client, "firmware load i2c failure\n"); @@ -93,7 +93,8 @@ int cx25840_loadfw(struct i2c_client *client) { struct cx25840_state *state = i2c_get_clientdata(client); const struct firmware *fw = NULL; - u8 buffer[4], *ptr; + u8 buffer[FWSEND]; + const u8 *ptr; int size, retval; if (state->is_cx23885) @@ -108,29 +109,23 @@ int cx25840_loadfw(struct i2c_client *client) buffer[0] = 0x08; buffer[1] = 0x02; - buffer[2] = fw->data[0]; - buffer[3] = fw->data[1]; - retval = fw_write(client, buffer, 4); - if (retval < 0) { - release_firmware(fw); - return retval; - } - - size = fw->size - 2; + size = fw->size; ptr = fw->data; while (size > 0) { - ptr[0] = 0x08; - ptr[1] = 0x02; - retval = fw_write(client, ptr, min(FWSEND, size + 2)); + int len = min(FWSEND - 2, size); + + memcpy(buffer + 2, ptr, len); + + retval = fw_write(client, buffer, len + 2); if (retval < 0) { release_firmware(fw); return retval; } - size -= FWSEND - 2; - ptr += FWSEND - 2; + size -= len; + ptr += len; } end_fw_load(client); -- cgit v1.2.3-70-g09d2