From e8ffef73c8dd2c2d00287829db87cdaf229d3859 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 26 May 2008 15:20:34 -0700 Subject: [PATCH] IB/ipath: Avoid test_bit() on u64 SDMA status value Gabriel C pointed out that when the x86 bitops are updated to operate on unsigned long, the code in sdma_abort_task() will produce warnings: drivers/infiniband/hw/ipath/ipath_sdma.c: In function 'sdma_abort_task': drivers/infiniband/hw/ipath/ipath_sdma.c:267: warning: passing argument 2 of 'constant_test_bit' from incompatible pointer type and so on, because it uses test_bit() to operation on a u64 value (returned by ipath_read_kref64() for a hardware register). Fix up these warnings by converting the test_bit() operations to &ing with appropriate symbolic defines of the bits within the hardware register. This has the benign side-effect of making the code more self-documenting as well. Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_kernel.h | 5 +++++ drivers/infiniband/hw/ipath/ipath_sdma.c | 12 ++++-------- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 59a8b254b9..0bd8bcb184 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -232,6 +232,11 @@ struct ipath_sdma_desc { #define IPATH_SDMA_TXREQ_S_ABORTED 2 #define IPATH_SDMA_TXREQ_S_SHUTDOWN 3 +#define IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG (1ull << 63) +#define IPATH_SDMA_STATUS_ABORT_IN_PROG (1ull << 62) +#define IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE (1ull << 61) +#define IPATH_SDMA_STATUS_SCB_EMPTY (1ull << 30) + /* max dwords in small buffer packet */ #define IPATH_SMALLBUF_DWORDS (dd->ipath_piosize2k >> 2) diff --git a/drivers/infiniband/hw/ipath/ipath_sdma.c b/drivers/infiniband/hw/ipath/ipath_sdma.c index 0a8c1b8091..eaba03273e 100644 --- a/drivers/infiniband/hw/ipath/ipath_sdma.c +++ b/drivers/infiniband/hw/ipath/ipath_sdma.c @@ -263,14 +263,10 @@ static void sdma_abort_task(unsigned long opaque) hwstatus = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmastatus); - if (/* ScoreBoardDrainInProg */ - test_bit(63, &hwstatus) || - /* AbortInProg */ - test_bit(62, &hwstatus) || - /* InternalSDmaEnable */ - test_bit(61, &hwstatus) || - /* ScbEmpty */ - !test_bit(30, &hwstatus)) { + if ((hwstatus & (IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG | + IPATH_SDMA_STATUS_ABORT_IN_PROG | + IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE)) || + !(hwstatus & IPATH_SDMA_STATUS_SCB_EMPTY)) { if (dd->ipath_sdma_reset_wait > 0) { /* not done shutting down sdma */ --dd->ipath_sdma_reset_wait; -- 2.39.5