Add lock protection from race conditions to the 104-quad-8 counter
driver for filter clock prescaler code changes. Mutex calls used for
protection.
Signed-off-by: Syed Nayyar Waris <syednwaris@gmail.com>
Fixes:
de65d0556343 ("counter: 104-quad-8: Support Filter Clock Prescaler")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
if (ret)
return ret;
+ mutex_lock(&priv->lock);
+
priv->fck_prescaler[channel_id] = prescaler;
/* Reset Byte Pointer */
outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP | QUAD8_RLD_PRESET_PSC,
base_offset + 1);
+ mutex_unlock(&priv->lock);
+
return len;
}