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cx231xx: Fix I2C on Internal Master 3 Bus

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[ Upstream commit 6c5da8031a3abfad259190d35f83d89568b72ee2 ]

Internal Master 3 Bus can send and receive only 4 bytes per time.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleh Kravchenko 2017-10-07 22:37:46 +00:00 committed by Greg Kroah-Hartman
parent 0806eaf138
commit 762d0762b9
1 changed files with 6 additions and 1 deletions
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7
drivers/media/usb/cx231xx/cx231xx-core.c
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@ -356,7 +356,12 @@ int cx231xx_send_vendor_cmd(struct cx231xx *dev,
*/
if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) ||
(ven_req->bRequest == 0x5) ||
(ven_req->bRequest == 0x6))) {
(ven_req->bRequest == 0x6) ||
/* Internal Master 3 Bus can send
* and receive only 4 bytes per time
*/
(ven_req->bRequest == 0x2))) {
unsend_size = 0;
pdata = ven_req->pBuff;