Pull battery into release branch

[linux-2.6-omap-h63xx.git] / drivers / media / dvb / b2c2 / flexcop-i2c.c

diff --git a/drivers/media/dvb/b2c2/flexcop-i2c.c b/drivers/media/dvb/b2c2/flexcop-i2c.c
index 02a0ea6e1c17e030e7391ec09ec396a24d70eb96..6bf858a436c98048653f1a6a0ef9eb9305709584 100644 (file)
--- a/drivers/media/dvb/b2c2/flexcop-i2c.c
+++ b/drivers/media/dvb/b2c2/flexcop-i2c.c
@@ -135,6 +135,13 @@ static int flexcop_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs
        struct flexcop_device *fc = i2c_get_adapdata(i2c_adap);
        int i, ret = 0;
 
+       /* Some drivers use 1 byte or 0 byte reads as probes, which this
+        * driver doesn't support.  These probes will always fail, so this
+        * hack makes them always succeed.  If one knew how, it would of
+        * course be better to actually do the read.  */
+       if (num == 1 && msgs[0].flags == I2C_M_RD && msgs[0].len <= 1)
+               return 1;
+
        if (mutex_lock_interruptible(&fc->i2c_mutex))
                return -ERESTARTSYS;