Hello Guoxiong Yan,
The patch a84fcdaa9058: "[media] rc: Introduce hix5hd2 IR transmitter
driver" from Aug 30, 2014, leads to the following static checker
warning:
drivers/media/rc/ir-hix5hd2.c:111 hix5hd2_ir_config()
warn: odd binop '0x3e80 & 0xffff0000'
drivers/media/rc/ir-hix5hd2.c
109 /* Now only support raw mode, with symbol start from low to
high */
110 rate = DIV_ROUND_CLOSEST(priv->rate, 1000000);
111 val = IR_CFG_SYMBOL_MAXWIDTH & IR_CFG_WIDTH_MASK <<
IR_CFG_WIDTH_SHIFT;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
112 val |= IR_CFG_SYMBOL_FMT & IR_CFG_FORMAT_MASK <<
IR_CFG_FORMAT_SHIFT;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
These seem like precedence bugs. My guess is that the intent was:
val = (IR_CFG_SYMBOL_MAXWIDTH & IR_CFG_WIDTH_MASK) <<
IR_CFG_WIDTH_SHIFT;
val |= (IR_CFG_SYMBOL_FMT & IR_CFG_FORMAT_MASK) <<
IR_CFG_FORMAT_SHIFT;
etc for the rest as well.
113 val |= (IR_CFG_INT_THRESHOLD - 1) & IR_CFG_INT_LEVEL_MASK
114 << IR_CFG_INT_LEVEL_SHIFT;
115 val |= IR_CFG_MODE_RAW;
116 val |= (rate - 1) & IR_CFG_FREQ_MASK << IR_CFG_FREQ_SHIFT;
117 writel_relaxed(val, priv->base + IR_CONFIG);
regards,
dan carpenter
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