Staging: udlfb: pre-allocated urb list helpers

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Add functions to pre-allocate and free usb bulk urbs for core render path.

Udlfb currently allocates a single urb, guarded by a mutex, that is a key
bottleneck. Because udlfb sends so much data, preallocation is most efficient.

Functions will be used by new rendering functions in later patches.

Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Bernie Thompson 2010-02-15 06:45:55 -08:00 • committed by Greg Kroah-Hartman

parent cc403dc67d

commit 4a4854dd20

2 changed files with 227 additions and 0 deletions

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192

drivers/staging/udlfb/udlfb.c

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35

drivers/staging/udlfb/udlfb.h

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