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Input: usbtouchscreen - support DMC devices with empty EEPROM 

A reply of 0x0600 means all OK, 0x1501 means OK, but EEPROM empty.
The behavior with an empty EEPROM is the same as without one at all
so do not fail loading the driver.

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Daniel Ritz 2007-09-10 01:31:40 -04:00 committed by Dmitry Torokhov
parent f76f672e09
commit 2a8281d72d
1 changed files with 2 additions and 1 deletions
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3
drivers/input/touchscreen/usbtouchscreen.c
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@ -402,7 +402,8 @@ static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
if (ret < 0)
return ret;
if (buf[0] != 0x06 || buf[1] != 0x00)
if ((buf[0] != 0x06 || buf[1] != 0x00) &&
(buf[0] != 0x15 || buf[1] != 0x01))
return -ENODEV;
/* start sending data */