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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 22:15:59 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 22:15:59 +0300
commit8ff546b801e5cca0337c0f0a7234795d0a6309a1 (patch)
treefbda2c8e8e5aa9b82d389091f7945e28cdb67418 /drivers/usb/core/message.c
parentca78d3173cff3503bcd15723b049757f75762d15 (diff)
parent0df8a3dbacb585bb9c8b2e55de43c6aac9d86488 (diff)
downloadlinux-8ff546b801e5cca0337c0f0a7234795d0a6309a1.tar.xz
Merge tag 'usb-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH: "Here is the big USB and PHY driver updates for 4.11-rc1. Nothing major, just the normal amount of churn in the usb gadget and dwc and xhci controllers, new device ids, new phy drivers, a new usb-serial driver, and a few other minor changes in different USB drivers. All have been in linux-next for a long time with no reported issues" * tag 'usb-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits) usb: cdc-wdm: remove logically dead code USB: serial: keyspan: drop header file USB: serial: io_edgeport: drop io-tables header file usb: musb: add code comment for clarification usb: misc: add USB251xB/xBi Hi-Speed Hub Controller Driver usb: misc: usbtest: remove redundant check on retval < 0 USB: serial: upd78f0730: sort device ids USB: serial: upd78f0730: add ID for EVAL-ADXL362Z ohci-hub: fix typo in dbg_port macro usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in DSPS usb: musb: tusb6010: Clean up tusb_omap_dma structure usb: musb: cppi_dma: Clean up cppi41_dma_controller structure usb: musb: cppi_dma: Clean up cppi structure usb: musb: cppi41: Detect aborted transfers in cppi41_dma_callback() usb: musb: dma: Add a DMA completion platform callback drivers: usb: usbip: Add missing break statement to switch usb: mtu3: remove redundant dev_err call in get_ssusb_rscs() USB: serial: mos7840: fix another NULL-deref at open USB: serial: console: clean up sanity checks USB: serial: console: fix uninitialised spinlock ...
Diffstat (limited to 'drivers/usb/core/message.c')
-rw-r--r--drivers/usb/core/message.c33
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index dea55914d641..2184ef40a82a 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -122,12 +122,11 @@ static int usb_internal_control_msg(struct usb_device *usb_dev,
* This function sends a simple control message to a specified endpoint and
* waits for the message to complete, or timeout.
*
- * Don't use this function from within an interrupt context, like a bottom half
- * handler. If you need an asynchronous message, or need to send a message
- * from within interrupt context, use usb_submit_urb().
- * If a thread in your driver uses this call, make sure your disconnect()
- * method can wait for it to complete. Since you don't have a handle on the
- * URB used, you can't cancel the request.
+ * Don't use this function from within an interrupt context. If you need
+ * an asynchronous message, or need to send a message from within interrupt
+ * context, use usb_submit_urb(). If a thread in your driver uses this call,
+ * make sure your disconnect() method can wait for it to complete. Since you
+ * don't have a handle on the URB used, you can't cancel the request.
*
* Return: If successful, the number of bytes transferred. Otherwise, a negative
* error number.
@@ -173,12 +172,11 @@ EXPORT_SYMBOL_GPL(usb_control_msg);
* This function sends a simple interrupt message to a specified endpoint and
* waits for the message to complete, or timeout.
*
- * Don't use this function from within an interrupt context, like a bottom half
- * handler. If you need an asynchronous message, or need to send a message
- * from within interrupt context, use usb_submit_urb() If a thread in your
- * driver uses this call, make sure your disconnect() method can wait for it to
- * complete. Since you don't have a handle on the URB used, you can't cancel
- * the request.
+ * Don't use this function from within an interrupt context. If you need
+ * an asynchronous message, or need to send a message from within interrupt
+ * context, use usb_submit_urb() If a thread in your driver uses this call,
+ * make sure your disconnect() method can wait for it to complete. Since you
+ * don't have a handle on the URB used, you can't cancel the request.
*
* Return:
* If successful, 0. Otherwise a negative error number. The number of actual
@@ -207,12 +205,11 @@ EXPORT_SYMBOL_GPL(usb_interrupt_msg);
* This function sends a simple bulk message to a specified endpoint
* and waits for the message to complete, or timeout.
*
- * Don't use this function from within an interrupt context, like a bottom half
- * handler. If you need an asynchronous message, or need to send a message
- * from within interrupt context, use usb_submit_urb() If a thread in your
- * driver uses this call, make sure your disconnect() method can wait for it to
- * complete. Since you don't have a handle on the URB used, you can't cancel
- * the request.
+ * Don't use this function from within an interrupt context. If you need
+ * an asynchronous message, or need to send a message from within interrupt
+ * context, use usb_submit_urb() If a thread in your driver uses this call,
+ * make sure your disconnect() method can wait for it to complete. Since you
+ * don't have a handle on the URB used, you can't cancel the request.
*
* Because there is no usb_interrupt_msg() and no USBDEVFS_INTERRUPT ioctl,
* users are forced to abuse this routine by using it to submit URBs for