diff options
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/usb/misc/onboard_usb_dev.c | 6 | ||||
| -rw-r--r-- | drivers/usb/misc/usb-ljca.c | 2 | ||||
| -rw-r--r-- | drivers/usb/misc/yurex.c | 21 |
4 files changed, 26 insertions, 15 deletions
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index 50b86d531701..6497c4e81e95 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -331,3 +331,15 @@ config USB_ONBOARD_DEV this config will enable the driver and it will automatically match the state of the USB subsystem. If this driver is a module it will be called onboard_usb_dev. + +config USB_ONBOARD_DEV_USB5744 + bool "Onboard USB Microchip usb5744 hub with SMBus support" + depends on (USB_ONBOARD_DEV && I2C=y) || (USB_ONBOARD_DEV=m && I2C=m) + help + Say Y here if you want to support onboard USB Microchip usb5744 + hub that requires SMBus initialization. + + This options enables usb5744 i2c default initialization sequence + during hub start-up configuration stage. It is must to enable this + option on AMD Kria KR260 Robotics Starter Kit as this hub is + connected to USB-SD converter which mounts the root filesystem. diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c index 560591e02d6a..75dfdca04ff1 100644 --- a/drivers/usb/misc/onboard_usb_dev.c +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -311,7 +311,7 @@ static void onboard_dev_attach_usb_driver(struct work_struct *work) static int onboard_dev_5744_i2c_init(struct i2c_client *client) { -#if IS_ENABLED(CONFIG_I2C) +#if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) struct device *dev = &client->dev; int ret; @@ -394,9 +394,11 @@ static int onboard_dev_probe(struct platform_device *pdev) i2c_node = of_parse_phandle(pdev->dev.of_node, "i2c-bus", 0); if (i2c_node) { - struct i2c_client *client; + struct i2c_client *client = NULL; +#if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) client = of_find_i2c_device_by_node(i2c_node); +#endif of_node_put(i2c_node); if (!client) { diff --git a/drivers/usb/misc/usb-ljca.c b/drivers/usb/misc/usb-ljca.c index 1a8d5e80b9ae..01ceafc4ab78 100644 --- a/drivers/usb/misc/usb-ljca.c +++ b/drivers/usb/misc/usb-ljca.c @@ -18,7 +18,7 @@ #include <linux/usb.h> #include <linux/usb/ljca.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> /* command flags */ #define LJCA_ACK_FLAG BIT(0) diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 4a9859e03f6b..6aebc736a80c 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -34,8 +34,6 @@ #define YUREX_BUF_SIZE 8 #define YUREX_WRITE_TIMEOUT (HZ*2) -#define MAX_S64_STRLEN 20 /* {-}922337203685477580{7,8} */ - /* table of devices that work with this driver */ static struct usb_device_id yurex_table[] = { { USB_DEVICE(YUREX_VENDOR_ID, YUREX_PRODUCT_ID) }, @@ -402,8 +400,9 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { struct usb_yurex *dev; - int len = 0; - char in_buffer[MAX_S64_STRLEN]; + int len; + char in_buffer[20]; + unsigned long flags; dev = file->private_data; @@ -413,16 +412,14 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, return -ENODEV; } - if (WARN_ON_ONCE(dev->bbu > S64_MAX || dev->bbu < S64_MIN)) { - mutex_unlock(&dev->io_mutex); - return -EIO; - } - - spin_lock_irq(&dev->lock); - scnprintf(in_buffer, MAX_S64_STRLEN, "%lld\n", dev->bbu); - spin_unlock_irq(&dev->lock); + spin_lock_irqsave(&dev->lock, flags); + len = snprintf(in_buffer, 20, "%lld\n", dev->bbu); + spin_unlock_irqrestore(&dev->lock, flags); mutex_unlock(&dev->io_mutex); + if (WARN_ON_ONCE(len >= sizeof(in_buffer))) + return -EIO; + return simple_read_from_buffer(buffer, count, ppos, in_buffer, len); } |