WARNING: line length of 91 exceeds 80 columns
#148: FILE: drivers/mfd/nct6694.c:61:
+static int nct6694_response_err_handling(struct nct6694 *nct6694, unsigned char err_status)

WARNING: line length of 97 exceeds 80 columns
#184: FILE: drivers/mfd/nct6694.c:97:
+int nct6694_read_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf)

WARNING: line length of 94 exceeds 80 columns
#196: FILE: drivers/mfd/nct6694.c:109:
+	ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, NCT6694_BULK_OUT_EP), &msg->cmd_header,

WARNING: line length of 98 exceeds 80 columns
#202: FILE: drivers/mfd/nct6694.c:115:
+	ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, NCT6694_BULK_IN_EP), &msg->response_header,

WARNING: line length of 83 exceeds 80 columns
#209: FILE: drivers/mfd/nct6694.c:122:
+			   le16_to_cpu(cmd_hd->len), &rx_len, NCT6694_URB_TIMEOUT);

WARNING: line length of 98 exceeds 80 columns
#234: FILE: drivers/mfd/nct6694.c:147:
+int nct6694_write_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf)

WARNING: line length of 94 exceeds 80 columns
#246: FILE: drivers/mfd/nct6694.c:159:
+	ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, NCT6694_BULK_OUT_EP), &msg->cmd_header,

WARNING: line length of 81 exceeds 80 columns
#252: FILE: drivers/mfd/nct6694.c:165:
+	ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, NCT6694_BULK_OUT_EP), buf,

WARNING: line length of 83 exceeds 80 columns
#253: FILE: drivers/mfd/nct6694.c:166:
+			   le16_to_cpu(cmd_hd->len), &tx_len, NCT6694_URB_TIMEOUT);

WARNING: line length of 98 exceeds 80 columns
#258: FILE: drivers/mfd/nct6694.c:171:
+	ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, NCT6694_BULK_IN_EP), &msg->response_header,

WARNING: line length of 83 exceeds 80 columns
#265: FILE: drivers/mfd/nct6694.c:178:
+			   le16_to_cpu(cmd_hd->len), &rx_len, NCT6694_URB_TIMEOUT);

WARNING: line length of 92 exceeds 80 columns
#309: FILE: drivers/mfd/nct6694.c:222:
+		dev_warn(nct6694->dev, "Failed to resubmit urb, status %pe",  ERR_PTR(ret));

WARNING: line length of 93 exceeds 80 columns
#341: FILE: drivers/mfd/nct6694.c:254:
+static int nct6694_irq_domain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)

WARNING: line length of 88 exceeds 80 columns
#376: FILE: drivers/mfd/nct6694.c:289:
+	nct6694->usb_msg = devm_kzalloc(dev, sizeof(union nct6694_usb_msg), GFP_KERNEL);

WARNING: line length of 90 exceeds 80 columns
#380: FILE: drivers/mfd/nct6694.c:293:
+	nct6694->int_buffer = devm_kzalloc(dev, sizeof(*nct6694->int_buffer), GFP_KERNEL);

WARNING: line length of 92 exceeds 80 columns
#418: FILE: drivers/mfd/nct6694.c:331:
+	usb_fill_int_urb(nct6694->int_in_urb, udev, usb_rcvintpipe(udev, NCT6694_INT_IN_EP),

WARNING: line length of 93 exceeds 80 columns
#419: FILE: drivers/mfd/nct6694.c:332:
+			 nct6694->int_buffer, sizeof(*nct6694->int_buffer), usb_int_callback,

WARNING: line length of 83 exceeds 80 columns
#428: FILE: drivers/mfd/nct6694.c:341:
+	ret = mfd_add_hotplug_devices(dev, nct6694_devs, ARRAY_SIZE(nct6694_devs));

WARNING: line length of 99 exceeds 80 columns
#462: FILE: drivers/mfd/nct6694.c:375:
+	{ USB_DEVICE_AND_INTERFACE_INFO(NCT6694_VENDOR_ID, NCT6694_PRODUCT_ID, 0xFF, 0x00, 0x00) },

CHECK: struct mutex definition without comment
#573: FILE: include/linux/mfd/nct6694.h:90:
+	struct mutex access_lock;

CHECK: spinlock_t definition without comment
#574: FILE: include/linux/mfd/nct6694.h:91:
+	spinlock_t irq_lock;

WARNING: line length of 98 exceeds 80 columns
#582: FILE: include/linux/mfd/nct6694.h:99:
+int nct6694_read_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf);

WARNING: line length of 99 exceeds 80 columns
#583: FILE: include/linux/mfd/nct6694.h:100:
+int nct6694_write_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf);

total: 0 errors, 21 warnings, 2 checks, 533 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 ecf828670022 ("mfd: Add core driver for Nuvoton NCT6694") 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, 21 warnings, 2 checks, 533 lines checked