Re: [PATCH] Remove explicit return type cast

From: kbuild test robot
Date: Thu Aug 03 2017 - 02:23:11 EST


Hi Hari,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on next-20170802]
[cannot apply to v4.13-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Hari-Prasath/Remove-explicit-return-type-cast/20170803-080312
config: blackfin-allyesconfig (attached as .config)
compiler: bfin-uclinux-gcc (GCC) 6.2.0
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=blackfin

All warnings (new ones prefixed by >>):

drivers/staging/pi433/pi433_if.c: In function 'DIO0_irq_handler':
>> drivers/staging/pi433/pi433_if.c:154:9: warning: return makes pointer from integer without a cast [-Wint-conversion]
return IRQ_HANDLED;
^~~~~~~~~~~
drivers/staging/pi433/pi433_if.c: In function 'DIO1_irq_handler':
drivers/staging/pi433/pi433_if.c:174:9: warning: return makes pointer from integer without a cast [-Wint-conversion]
return IRQ_HANDLED;
^~~~~~~~~~~

vim +154 drivers/staging/pi433/pi433_if.c

129
130 /* GPIO interrupt handlers */
131 static irq_handler_t
132 DIO0_irq_handler(unsigned int irq, void *dev_id, struct pt_regs *regs)
133 {
134 struct pi433_device *device = dev_id;
135
136 if (device->irq_state[DIO0] == DIO_PacketSent)
137 {
138 device->free_in_fifo = FIFO_SIZE;
139 printk("DIO0 irq: Packet sent\n"); // TODO: printk() should include KERN_ facility level
140 wake_up_interruptible(&device->fifo_wait_queue);
141 }
142 else if (device->irq_state[DIO0] == DIO_Rssi_DIO0)
143 {
144 printk("DIO0 irq: RSSI level over threshold\n");
145 wake_up_interruptible(&device->rx_wait_queue);
146 }
147 else if (device->irq_state[DIO0] == DIO_PayloadReady)
148 {
149 printk("DIO0 irq: PayloadReady\n");
150 device->free_in_fifo = 0;
151 wake_up_interruptible(&device->fifo_wait_queue);
152 }
153
> 154 return IRQ_HANDLED;
155 }
156

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