Use the scatterlist iterators and remove direct indexing of the scatterlist array.
This way allows us to pre-allocate one small scatterlist, which can be chained with one runtime allocated scatterlist if the pre-allocated one isn't enough for the whole request. Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Bart Van Assche <[email protected]> Signed-off-by: Ming Lei <[email protected]> --- drivers/scsi/ppa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c index 35213082e933..a406cc825426 100644 --- a/drivers/scsi/ppa.c +++ b/drivers/scsi/ppa.c @@ -590,7 +590,7 @@ static int ppa_completion(struct scsi_cmnd *cmd) if (cmd->SCp.buffer && !cmd->SCp.this_residual) { /* if scatter/gather, advance to the next segment */ if (cmd->SCp.buffers_residual--) { - cmd->SCp.buffer++; + cmd->SCp.buffer = sg_next(cmd->SCp.buffer); cmd->SCp.this_residual = cmd->SCp.buffer->length; cmd->SCp.ptr = sg_virt(cmd->SCp.buffer); -- 2.20.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
