Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 19/27] cx231xx: Fix I2C on Internal Master 3 Bus | Date | Mon, 6 Nov 2017 12:28:04 +0100 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: Oleh Kravchenko <oleg@kaa.org.ua>
[ 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> --- drivers/media/usb/cx231xx/cx231xx-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/media/usb/cx231xx/cx231xx-core.c +++ b/drivers/media/usb/cx231xx/cx231xx-core.c @@ -365,7 +365,12 @@ int cx231xx_send_vendor_cmd(struct cx231 */ 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;
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