staging: comedi: s626: tidy up freeing of the dma buffers

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Currently the dma buffers are freed during the detach of the driver using
the function s626_close_dma_b(). The buffers are also freed while the
interrupt handler is still attached. This could result in a race condition.

Refactor the code so that the buffers are freed after the interrupt handler
is released and the PCI device is disabled.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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H Hartley Sweeten 2014-08-25 17:55:51 -07:00 • committed by Greg Kroah-Hartman

parent d558c59677

commit 3757e79559

1 changed files with 19 additions and 25 deletions

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drivers/staging/comedi/drivers/s626.c

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