From: Steve Wise Date: Wed, 11 Aug 2010 16:47:08 +0000 (-0400) Subject: xprtrdma: Do not truncate iova_start values in frmr registrations. X-Git-Tag: firefly_0821_release~9833^2~713^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7a8b80eb38b248cfdf84048dad12073d5cfba3e6;p=firefly-linux-kernel-4.4.55.git xprtrdma: Do not truncate iova_start values in frmr registrations. A bad cast causes the iova_start, which in this case is a 64b DMA bus address, to be truncated on 32b systems. This breaks frmrs on 32b systems. No cast is needed. Signed-off-by: Steve Wise Signed-off-by: Trond Myklebust --- diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 27015c6d8eb5..3bdbd9f3b88f 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1490,7 +1490,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, memset(&frmr_wr, 0, sizeof frmr_wr); frmr_wr.opcode = IB_WR_FAST_REG_MR; frmr_wr.send_flags = 0; /* unsignaled */ - frmr_wr.wr.fast_reg.iova_start = (unsigned long)seg1->mr_dma; + frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma; frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl; frmr_wr.wr.fast_reg.page_list_len = i; frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;