WARNING: line length of 89 exceeds 80 columns
#43: FILE: drivers/nfc/trf7970a.c:281:
+#define TRF7970A_RX_SPECIAL_SETTINGS_GD_MASK	(TRF7970A_RX_SPECIAL_SETTINGS_GD_MAX << \

WARNING: line length of 94 exceeds 80 columns
#44: FILE: drivers/nfc/trf7970a.c:282:
+							TRF7970A_RX_SPECIAL_SETTINGS_GD_SHIFT)

WARNING: line length of 94 exceeds 80 columns
#45: FILE: drivers/nfc/trf7970a.c:283:
+#define TRF7970A_RX_SPECIAL_SETTINGS_GD_0DB	(0x0 << TRF7970A_RX_SPECIAL_SETTINGS_GD_SHIFT)

WARNING: line length of 94 exceeds 80 columns
#46: FILE: drivers/nfc/trf7970a.c:284:
+#define TRF7970A_RX_SPECIAL_SETTINGS_GD_5DB	(0x1 << TRF7970A_RX_SPECIAL_SETTINGS_GD_SHIFT)

WARNING: line length of 94 exceeds 80 columns
#47: FILE: drivers/nfc/trf7970a.c:285:
+#define TRF7970A_RX_SPECIAL_SETTINGS_GD_10DB	(0x2 << TRF7970A_RX_SPECIAL_SETTINGS_GD_SHIFT)

WARNING: line length of 94 exceeds 80 columns
#48: FILE: drivers/nfc/trf7970a.c:286:
+#define TRF7970A_RX_SPECIAL_SETTINGS_GD_15DB	(0x3 << TRF7970A_RX_SPECIAL_SETTINGS_GD_SHIFT)

WARNING: line length of 99 exceeds 80 columns
#92: FILE: drivers/nfc/trf7970a.c:589:
+	 * Every time the ISO_CTRL register is written, the RX special setting register is reset by

WARNING: line length of 92 exceeds 80 columns
#93: FILE: drivers/nfc/trf7970a.c:590:
+	 * the chip. When a custom gain reguduction is required, it should be rewritten now.

WARNING: line length of 87 exceeds 80 columns
#109: FILE: drivers/nfc/trf7970a.c:976:
+				ret = trf7970a_update_iso_ctrl_register(trf, iso_ctrl);

WARNING: line length of 81 exceeds 80 columns
#149: FILE: drivers/nfc/trf7970a.c:1655:
+		ret = trf7970a_update_iso_ctrl_register(trf, trf->iso_ctrl_tech);

WARNING: line length of 94 exceeds 80 columns
#196: FILE: drivers/nfc/trf7970a.c:2112:
+	if (of_property_read_u32(np, "ti,rx-gain-reduction-db", &rx_gain_reduction_db) == 0) {

WARNING: line length of 92 exceeds 80 columns
#199: FILE: drivers/nfc/trf7970a.c:2115:
+		} else if ((rx_gain_reduction_db % TRF7970A_RX_GAIN_REDUCTION_DB_PER_LSB)) {

WARNING: line length of 90 exceeds 80 columns
#202: FILE: drivers/nfc/trf7970a.c:2118:
+			dev_dbg(trf->dev, "RX gain set to -%udB\n", rx_gain_reduction_db);

total: 0 errors, 13 warnings, 0 checks, 171 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit b2caf8317380 ("NFC: trf7970a: Create device-tree parameter for RX gain reduction") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 13 warnings, 0 checks, 171 lines checked