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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-08-02 15:05:45 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:55:01 -0700 |
| commit | 9439eb94b5c374d5b02699f8897fc43aa3603701 (patch) | |
| tree | 87e4629b1c9e0f14da4562cd1cb38a809777c311 /Documentation/driver-model | |
| parent | d617bc83ff48ebf0df253605529d8b3bef15773a (diff) | |
USB: update spinlock usage for root-hub URBs
This patch (as952) adjusts the spinlock usage in the root-hub
emulation part of usbcore, to make it match more closely the pattern
used by regular host controller drivers. To wit: The private lock
(usb_hcd_root_hub_lock) is held throughout the important parts, and it
is dropped temporarily without re-enabling interrupts around the call
to usb_hcd_giveback_urb().
A nice side effect is that the code now avoids calling
local_irq_save(), thereby becoming more RT-friendly.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/driver-model')
0 files changed, 0 insertions, 0 deletions