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authorJohan Hovold <johan@kernel.org>2021-01-04 15:53:02 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-04 16:51:35 +0100
commit020a1f453449294926ca548d8d5ca970926e8dfd (patch)
tree9d117299d9e3944d7efbc83526a4c21581b93833 /mm
parentc318840fb2a42ce25febc95c4c19357acf1ae5ca (diff)
downloadlinux-020a1f453449294926ca548d8d5ca970926e8dfd.tar.bz2
USB: usblp: fix DMA to stack
Stack-allocated buffers cannot be used for DMA (on all architectures). Replace the HP-channel macro with a helper function that allocates a dedicated transfer buffer so that it can continue to be used with arguments from the stack. Note that the buffer is cleared on allocation as usblp_ctrl_msg() returns success also on short transfers (the buffer is only used for debugging). Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210104145302.2087-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions