WARNING: line length of 86 exceeds 80 columns
#30: FILE: drivers/net/dsa/ks8995.c:84:
+#define KS8995_PC1_RCV_SNIFF	BIT(6)	/* Packets received goes to sniffer port(s) */

WARNING: line length of 89 exceeds 80 columns
#31: FILE: drivers/net/dsa/ks8995.c:85:
+#define KS8995_PC1_XMIT_SNIFF	BIT(5)	/* Packets transmitted goes to sniffer port(s) */

WARNING: line length of 93 exceeds 80 columns
#46: FILE: drivers/net/dsa/ks8995.c:454:
+	/* Isolate all user ports so they can only send packets to itself and the CPU port */

WARNING: line length of 82 exceeds 80 columns
#48: FILE: drivers/net/dsa/ks8995.c:456:
+		ret = ks8995_read_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), &val);

WARNING: line length of 90 exceeds 80 columns
#50: FILE: drivers/net/dsa/ks8995.c:458:
+			dev_err(ks->dev, "failed to read KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 82 exceeds 80 columns
#57: FILE: drivers/net/dsa/ks8995.c:465:
+		ret = ks8995_write_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), val);

WARNING: line length of 91 exceeds 80 columns
#59: FILE: drivers/net/dsa/ks8995.c:467:
+			dev_err(ks->dev, "failed to write KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 88 exceeds 80 columns
#65: FILE: drivers/net/dsa/ks8995.c:473:
+	ret = ks8995_read_reg(ks, KS8995_REG_PC(KS8995_CPU_PORT, KS8995_REG_PC1), &val);

WARNING: line length of 88 exceeds 80 columns
#73: FILE: drivers/net/dsa/ks8995.c:481:
+	ret = ks8995_write_reg(ks, KS8995_REG_PC(KS8995_CPU_PORT, KS8995_REG_PC1), val);

WARNING: line length of 82 exceeds 80 columns
#101: FILE: drivers/net/dsa/ks8995.c:527:
+		ret = ks8995_read_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), &val);

WARNING: line length of 90 exceeds 80 columns
#103: FILE: drivers/net/dsa/ks8995.c:529:
+			dev_err(ks->dev, "failed to read KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 82 exceeds 80 columns
#109: FILE: drivers/net/dsa/ks8995.c:535:
+		ret = ks8995_write_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), val);

WARNING: line length of 91 exceeds 80 columns
#111: FILE: drivers/net/dsa/ks8995.c:537:
+			dev_err(ks->dev, "failed to write KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 85 exceeds 80 columns
#122: FILE: drivers/net/dsa/ks8995.c:548:
+		dev_err(ks->dev, "failed to read KS8995_REG_PC1 on port %d\n", port);

WARNING: line length of 86 exceeds 80 columns
#130: FILE: drivers/net/dsa/ks8995.c:556:
+		dev_err(ks->dev, "failed to write KS8995_REG_PC1 on port %d\n", port);

WARNING: line length of 82 exceeds 80 columns
#159: FILE: drivers/net/dsa/ks8995.c:585:
+		ret = ks8995_read_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), &val);

WARNING: line length of 90 exceeds 80 columns
#161: FILE: drivers/net/dsa/ks8995.c:587:
+			dev_err(ks->dev, "failed to read KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 82 exceeds 80 columns
#167: FILE: drivers/net/dsa/ks8995.c:593:
+		ret = ks8995_write_reg(ks, KS8995_REG_PC(i, KS8995_REG_PC1), val);

WARNING: line length of 91 exceeds 80 columns
#169: FILE: drivers/net/dsa/ks8995.c:595:
+			dev_err(ks->dev, "failed to write KS8995_REG_PC1 on port %d\n", i);

WARNING: line length of 85 exceeds 80 columns
#180: FILE: drivers/net/dsa/ks8995.c:606:
+		dev_err(ks->dev, "failed to read KS8995_REG_PC1 on port %d\n", port);

WARNING: line length of 86 exceeds 80 columns
#188: FILE: drivers/net/dsa/ks8995.c:614:
+		dev_err(ks->dev, "failed to write KS8995_REG_PC1 on port %d\n", port);

total: 0 errors, 21 warnings, 0 checks, 169 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 03d207e400ea ("net: dsa: ks8995: Implement port isolation") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 21 warnings, 0 checks, 169 lines checked