[media] gscpa_ov519: Fix the bandwidth calc for enabling compression

Somehow the code has ended up assuming 1400 packets/sec which of course
is wrong for usb1 devices like the ov511 cameras. usb1 only does 1000
(isoc) packets / sec.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/ov519.c b/drivers/media/video/gspca/ov519.c
index 3d68ad5015d5fc4dd722589b29799980a2a9de70..1075668db296b314762ae0d9919c328fe8550cd5 100644 (file)
--- a/drivers/media/video/gspca/ov519.c
+++ b/drivers/media/video/gspca/ov519.c
@@ -3683,8 +3683,8 @@ static void ov511_mode_init_regs(struct sd *sd)
        /* Check if we have enough bandwidth to disable compression */
        fps = (interlaced ? 60 : 30) / (sd->clockdiv + 1) + 1;
        needed = fps * sd->gspca_dev.width * sd->gspca_dev.height * 3 / 2;
-       /* 1400 is a conservative estimate of the max nr of isoc packets/sec */
-       if (needed > 1400 * packet_size) {
+       /* 1000 isoc packets/sec */
+       if (needed > 1000 * packet_size) {
                /* Enable Y and UV quantization and compression */
                reg_w(sd, R511_COMP_EN, 0x07);
                reg_w(sd, R511_COMP_LUT_EN, 0x03);