Hi Vishal,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on robh/for-next v5.8-rc1 next-20200618]
[cannot apply to xlnx/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Vishal-Sagar/Add-support-for-Xilinx-UHD-SDI-Receiver-subsystem/20200618-135100
base:   git://linuxtv.org/media_tree.git master
config: arc-allyesconfig (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All error/warnings (new ones prefixed by >>):


vim +/irqreturn_t +1113 drivers/media/platform/xilinx/xilinx-sdirxss.c

  1103	
  1104	/**
  1105	 * xsdirxss_irq_handler - Interrupt handler for SDI Rx
  1106	 * @irq: IRQ number
  1107	 * @dev_id: Pointer to device state
  1108	 *
  1109	 * The SDI Rx interrupts are cleared by writing 1 to corresponding bit.
  1110	 *
  1111	 * Return: IRQ_HANDLED after handling interrupts
  1112	 */

1113	static irqreturn_t xsdirxss_irq_handler(int irq, void *dev_id)

  1114	{
  1115		struct xsdirxss_state *state = (struct xsdirxss_state *)dev_id;
  1116		struct device *dev = state->dev;
  1117		u32 status;
  1118	
  1119		status = xsdirxss_read(state, XSDIRX_ISR_REG);
  1120		xsdirxss_write(state, XSDIRX_ISR_REG, status);
  1121		dev_dbg(dev, "interrupt status = 0x%08x\n", status);
  1122	
  1123		if (!status)

1124			return IRQ_NONE;

  1125	
  1126		if (status & XSDIRX_INTR_VIDLOCK_MASK ||
  1127		    status & XSDIRX_INTR_VIDUNLOCK_MASK) {
  1128			u32 val1, val2;
  1129			struct v4l2_event event = { 0 };
  1130			unsigned long flags;
  1131	
  1132			dev_dbg(dev, "video lock/unlock interrupt\n");
  1133	
  1134			spin_lock_irqsave(&state->slock, flags);
  1135			xsdirx_streamflow_control(state, false);
  1136	
  1137			val1 = xsdirxss_read(state, XSDIRX_MODE_DET_STAT_REG);
  1138			val2 = xsdirxss_read(state, XSDIRX_TS_DET_STAT_REG);
  1139	
  1140			if ((val1 & XSDIRX_MODE_DET_STAT_MODE_LOCK_MASK) &&
  1141			    (val2 & XSDIRX_TS_DET_STAT_LOCKED_MASK)) {
  1142				u32 mask = XSDIRX_RST_CTRL_RST_CRC_ERRCNT_MASK |
  1143					   XSDIRX_RST_CTRL_RST_EDH_ERRCNT_MASK;
  1144	
  1145				dev_dbg(dev, "video lock interrupt\n");
  1146	
  1147				xsdirxss_set(state, XSDIRX_RST_CTRL_REG, mask);
  1148				xsdirxss_clr(state, XSDIRX_RST_CTRL_REG, mask);
  1149	
  1150				val1 = xsdirxss_read(state, XSDIRX_ST352_VALID_REG);
  1151				val2 = xsdirxss_read(state, XSDIRX_ST352_DS1_REG);
  1152	
  1153				dev_dbg(dev, "valid st352 mask = 0x%08x\n", val1);
  1154				dev_dbg(dev, "st352 payload = 0x%08x\n", val2);
  1155	
  1156				if (!xsdirx_get_stream_properties(state)) {
  1157					state->vidlocked = true;
  1158					xsdirxss_set_gtclk(state);
  1159				} else {
  1160					dev_err(dev, "Unable to get stream properties!\n");
  1161					state->vidlocked = false;
  1162				}
  1163			} else {
  1164				dev_dbg(dev, "video unlock interrupt\n");
  1165				state->vidlocked = false;
  1166			}
  1167			spin_unlock_irqrestore(&state->slock, flags);
  1168	
  1169			event.type = V4L2_EVENT_SOURCE_CHANGE;
  1170			event.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION;
  1171			v4l2_subdev_notify_event(&state->subdev, &event);
  1172		}
  1173	
  1174		if (status & (XSDIRX_INTR_UNDERFLOW_MASK | XSDIRX_INTR_OVERFLOW_MASK)) {
  1175			struct v4l2_event event = { 0 };
  1176	
  1177			dev_dbg(dev, "Video in to AXI4 Stream core under/overflow interrupt\n");
  1178	
  1179			event.type = V4L2_EVENT_XILINX_SDIRX_UND_OVR_FLOW;
  1180			if (status & XSDIRX_INTR_UNDERFLOW_MASK)
  1181				event.u.data[0] = XILINX_SDIRX_UNDERFLOW_EVENT;
  1182			if (status & XSDIRX_INTR_OVERFLOW_MASK)
  1183				event.u.data[0] = XILINX_SDIRX_OVERFLOW_EVENT;
  1184	
  1185			v4l2_subdev_notify_event(&state->subdev, &event);
  1186		}

1187		return IRQ_HANDLED;

  1188	}
  1189	

---
0-DAY CI Kernel Test Service, Intel Corporation
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