The kernel i2c model uses right-aligned 7-bit i2c addresses, but the
2250 firmware uses an 8-bit address in the usb vendor request. A
previous patch by Jean Delvare shifted the i2c addresses 1 bit to the
right, and this patch fixes the write_reg function to shift it back
before sending the vendor request.
Priority: normal
Signed-off-by: Pete Eberlein <p...@sensoray.com>
diff -r 3a4be7d7dabd -r 134a95c0d98b linux/drivers/staging/go7007/s2250-board.c
--- a/linux/drivers/staging/go7007/s2250-board.c Sun Jan 03 17:04:42
2010 +0000
+++ b/linux/drivers/staging/go7007/s2250-board.c Wed Jan 13 14:11:48
2010 -0800
@@ -159,7 +159,7 @@
struct go7007 *go = i2c_get_adapdata(client->adapter);
struct go7007_usb *usb;
int rc;
- int dev_addr = client->addr;
+ int dev_addr = client->addr << 1; /* firmware wants 8-bit address */
u8 *buf;
if (go == NULL)
--
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