| commit | 8457d99cab81e91724b43363f7fccd851d766187 | |
| author | Bjørn Mork <bjorn@mork.no> | |
| Mon, 16 Jan 2012 14:12:00 +0000 (16 15:12 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Tue, 24 Jan 2012 22:34:09 +0000 (24 14:34 -0800) | ||
| tree | 92b6e613c007894e2da249008b68b9bd7637b26f | treesnapshot (tar.gz zip) |
| parent | cafbe85fb0d00d32988905c4978df433ca9b6512 | commitdiff |
USB: cdc-wdm: no need to use usb_alloc_coherent
As Documentation/usb/dma.txt states:
Most drivers should *NOT* be using these primitives; they don't need
to use this type of memory (dma-coherent), and memory returned from
kmalloc() will work just fine.
This driver handle only very low bandwith transfers. It is not an
obvious candidate for usb_alloc_coherent().
Using these calls only serves to complicate the code for no gain,
as has been shown by multiple bugs related to this allocation path.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As Documentation/usb/dma.txt states:
Most drivers should *NOT* be using these primitives; they don't need
to use this type of memory (dma-coherent), and memory returned from
kmalloc() will work just fine.
This driver handle only very low bandwith transfers. It is not an
obvious candidate for usb_alloc_coherent().
Using these calls only serves to complicate the code for no gain,
as has been shown by multiple bugs related to this allocation path.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/usb/class/cdc-wdm.c | diffblobblamehistory |